West Mojave Plan FEIR/S - Desert Managers Group

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Table 3-47MANAGEMENT AREABLM ManagedPercentage of Each Conservation Area HavingHigh and Moderate Mineral PotentialMANAGEMENT AREAACRESPivate andState ManagedOther FederalManagedTotalManagement AreaTotal HighPotentialPercent ofManagementAreaACRESTotal ModeratePotentialPercent ofManagementAreaSuperior-Cronese DWMA 402,962 209,979 9,646 622,587 51,053 8% 82,406 13%Newberry-Rodman DWMA 195,046 48,440 54 243,540 10,777 4% 58,754 24%Pinto Mountains DWMA 109,090 7,240 655 116,985 29,888 26% 20,506 18%Fremont-Kramer DWMA 320,468 190,389 4 510,861 24,275 5% 10,876 2%Mojave Ground SquirrelConservation Area 669,352 86,612 1,790 757754 82,794 11% 181,224 24%Carbonate Endemics 4,393 762 10 5,165 257 5% 4,416 85%Alkali Mariposa Lily 67,330 15 67,345 1,691 3%Barstow Wooly Sunflower 18,327 17,884 36,211Bendries Thrasher 9,363 16,390 98,126 123,879 2,186 2% 7
A third item, yttrium (on the USBM list but not the NDS list) occurs as undevelopedresources in the southern part of the planning area. Similar to the “rare earth” elements, yttriumis found in the mineral xenotime in Music Valley at the edge of the Pinto Mountains in RiversideCounty. In 1998 Draco Exploration identified 330,000 short tons of resources containing over700,000 pounds of Yttrium oxide and nearly 1.2 million pounds of additional rare-earth oxides(Moyle & Cather, 1992, p. 57). The United States imports 100 percent of its yttrium, with mostcoming from China. There are no satisfactory substitutes for yttrium regarding its use inelectronics, lasers and phosphors in color television and computer monitors (Hedrick, 2002, p.186-187).Although celestite (along with kyanite, mica and talc), has been determined to be “neitherstrategic nor critical” in the Stockpile Report to Congress for fiscal year 2001 (DOD, p. 55),celestite (an ore of strontium) has been on the stockpile inventory in years past. About 100 acresin the planning area have high potential for the occurrence of strontium resources, and severalthousand tons of celestite were mined during both world wars from the southern edge of theCady Mountains. By far the largest deposits of strontium minerals in California occur in thefoothills of the Cady Mountains (Ver Planck, 1957, p. 607). Strontium is used for ceramics,ceramic magnets, and glass, particularly television plate glass because of its ability to block X-rays. It also produces the red flame in pyrotechnics, including ammunition tracers and flares.The United States import reliance on strontium is 100 percent.A 1992 study by the U.S. Geological Survey estimated the occurrence of the criticalmetals lead, silver and zinc in the planning area. The report included a figure showing theprobability distributions for each metal in all of the undiscovered deposits that were evaluated.Figures in metric tons were plotted against probability of occurrence ranging from zero to one.At a probability of 0.5, the estimated number of metric tons in the study area was predicted to be200 tonnes of lead, 300 tonnes of silver and 7 tonnes of zinc (Tosdal, et al., Dec. 1992, p. 78).Silver is often produced as a byproduct from gold mining. Gold is being mined at Randsburgand has been recently mined in the Mojave gold mining district.3.4.3.3 Identified Resources by CommodityWithin the planning area there are approximately 426,000 acres having moderate to highpotential for the occurrence and accumulation of metallic mineral resources, 126,000 acreshaving potential for the occurrence of industrial minerals, and 47,700 acres having potential forthe occurrence of construction materials. In addition, there are nearly 13,000 acres havingmoderate to high potential for the accumulation of sodium and potassium minerals. There areapproximately 119,000 acres classified as Known Geothermal Resource Areas and 480,000 acresclassified as prospectively valuable for geothermal resources (BLM Manual 3031). Within theplan area there are about ten active mines in critical habitat for the desert tortoise.There are twelve sites near Barstow in San Bernardino County with important resourcesamounting to 16 million tons (Almquist, et al., 1993, p. 4) for landscaping rock (10 crushed stone& two flagstone): black granite, pink granite, beige, Afton green rock (3 quarries), mint green,pink volcanic rock, dusty rose and wine. Flagstone is mined from two sites in the RandMountains. These figures do not include the brown or “gold” colored rock east of BarstowChapter 3 3-227
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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
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Overall, one sees that 68% of the 3
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off regions discussed herein. Black
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ManixACECMojave fishhookcactusRainb
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Range of Mohave Ground SquirrelN190
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3.3.3.2.2 Seasonal ActivityThe MGS
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1996). As herbaceous annuals appear
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1998 Mohave Ground Squirrel Transec
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Finally, the 84% success rate was a
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LaRue characterized substrates at t
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There were no MGS occurrences in 28
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certain shrubs (e.g. winterfat) tha
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NAWS China Lake 1993). As discussed
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Cumulatively, one finds there to be
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Citing Bury and Luckenbach (1977),
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the MGS is restricted to about 7,00
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Habitat Management Plans (HMPs) wer
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Basic to the biology of bighorn she
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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 and 190: 3.3.8.8 Kern BuckwheatLife History:
Page 191 and 192: Threats Affecting the Mojave Monkey
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: MANAGEMENT AREATable 3-46Potential
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
Page 241 and 242: Recreationists engage in activities
Page 243 and 244: OPENAREADoveSpringsElMirageJawboneC
Page 245 and 246: cycle engine motorcycles in OHV rid
Page 247 and 248: One popular activity is dual sport
Page 249 and 250: Compliance With Regulations: Compli
Page 251 and 252: REGIONORCITYRidgecrestSanBernardino
Page 253 and 254: REGIONORCITYVictorville /AppleValle
Page 255 and 256: Rail: The West Mojave planning area
Page 257 and 258: Arterials: Arterials are routes wit
Page 259 and 260: Ridgecrest-Inyokern Sanitary Landfi
Page 261 and 262: approximately 3 miles south of the
Page 263 and 264: Trona-Agrus Transfer Station (SWIS
Page 265 and 266: The BLM is an agency of the U.S. De
Page 267 and 268: Route designations apply only to ro
Page 269 and 270: Utility Maintenance: Many powerline
Page 271 and 272: ACECNAME ANDNUMBERHarper Dry Lake(3
Page 273 and 274: SUBREGIONAmboyBighornCoyoteEastSier
Page 275 and 276: • 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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