West Mojave Plan FEIR/S - Desert Managers Group

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pollution levels through 2025. The projections are for a population increase of over 50% areduction in ozone precursor levels over 30% and increases in PM 10 levels of nearly 30%.AIRBASINAIR QUALITYDISTRICTTable 3-8Attainment Status By Air Basin and Air DistrictPOLLUTANTPLANNINGAREA NAMEFEDERALDESIGNATIONSTATEDESIGNATIONGBVAB GBUAPCD PM 10 (federal) Owens Valley SevereNonattainmentPM 10 (federal) Rose Valley ModerateNonattainmentPM 10 (state) GBVAB NonattainmentAll others GBVAB Unclassified/attainmentAttainmentMDAB KCAPCD PM 10 (federal) Indian WellsValleyModerateNonattainmentPM 10 (state) MDAB NonattainmentOzone Eastern Kern Nonattainment(federal) County*Ozone (state) MDAB NonattainmentAll othersEastern KernCountyUnclassified/attainmentMDAQMD PM 10 (federal) Searles Valley ModerateNonattainmentPM 10 (federal) Mojave Desert ModerateNonattainmentOzone(federal)Ozone (state)Mojave DesertmodifiedSan BernardinoCo. WideNonattainmentAttainmentNonattainmentSulfates (state) Searles Valley NonattainmentHydrogen Searles ValleyNonattainmentSulfide (state)PM 10 (state) San BernardinoCo. wideNonattainmentAll othersMDAQMDWideUnclassified/attainmentNonattainmentAVAQMDOzone(federal)Mojave DesertmodifiedNonattainmentPM 10 (state) Basin wide NonattainmentOzone (state) Basin wide NonattainmentAll Others Basin wide Unclassified/attainmentNonattainmentChapter 3 3-52
AIRBASINAIR QUALITYDISTRICTPOLLUTANTSSAB SCAQMD Ozone(federal)Chapter 3 3-53PLANNINGAREA NAMECoachella ValleyFEDERALDESIGNATIONNonattainmentSTATEDESIGNATIONPM 10 (state) SSAB NonattainmentOzone (state) SSAB NonattainmentAll others SSAB Unclassified/attainmentAttainmentRespirable Particulate Matter (PM 10 ): PM 10 is the most important air pollutant in theWest Mojave planning area. PM 10 in the atmosphere can be caused by both environmentalfactors and human activities. Human activities that contribute to the PM 10 emissions includecombustion sources such as stack emissions, diesel exhaust and smoke from prescribed fire andwild fire, fugitive dust sources such as construction and demolition activities, off highwayvehicle (OHV) travel, unpaved public roads and parking lots, industrial activities, OHV openareas and military activities. The combustion sources tend to produce smaller particulates (lessthan 5 µ) while fugitive sources tend to produce larger particulates (larger than 5µ).One of the reasons for the concern with PM 10 emissions is their adverse effect on humanhealth. All of the PM 10 particles are considered respirable particulate because they can beinhaled into the nose, throat and/or lungs. The fine PM 10 particles are the largest threat to healthbecause they tend to deposit in the air sacks. In addition, many of the fine particles are fromprecursor emissions many of which are toxic or carcinogenic. Fugitive dust is primarily coarseparticulate that is not as likely to contain toxic materials. The newest studies report that a 100µgm/m 3 increase in daily PM 10 concentrations would increase mortality by 10%. The state PM 10standards are considered public health goals. The USEPA has established new NAAQSstandards for PM 2.5 emissions. These standards are for particles at or below 2.5 µ. These fineparticles have been implicated as an increased health risk and consist of chemical compoundsthat mostly result from combustion processes.Nearly all of the planning area has recorded concentrations of PM 10 in excess of thenational and state ambient air quality standards for PM 10 emissions. The USEPA has classifiedfive areas within the West Mojave planning area as federal PM 10 nonattainment areas. The fivecurrent federal nonattainment areas are: the Owens Valley PM 10 Planning Area, the CosoJunction PM 10 Planning Area, the Indian Wells Valley PM 10 Planning Area, the Trona PM 10Planning Area and the San Bernardino County PM 10 Area. The Owens Valley planning area isone of five serious federal nonattainment PM 10 planning areas in the nation. Southeast KernCounty and northeastern Los Angeles County (Antelope Valley) are currently listed asunclassified by the USEPA.The Antelope Valley Area has recorded levels above the national threshold, but has notbeen classified as nonattainment by USEPA yet. The air quality management district has beenworking directly with USEPA to successfully reduce the PM 10 concentration levels and avoidhaving the Antelope Valley Planning Area designated as a federal nonattainment area. Part ofthis effort is through the adoption and implementation of rules to control fugitive dust that
Page 1 and 2: CHAPTER THREEAFFECTED ENVIRONMENT3.
Page 3 and 4: The CDCA Plan assigns a “multiple
Page 5 and 6: Desert Tortoise Research Natural Ar
Page 7 and 8: closure to target shooting. Hunting
Page 9 and 10: percentage of public land ownership
Page 11 and 12: As of March 2004, BLM had acquired
Page 13 and 14: Ripley Joshua Tree Woodland: The st
Page 15 and 16: through “resource use” designat
Page 17 and 18: Significant Ecological Areas: There
Page 19 and 20: Wildlife and Wildflower Sanctuaries
Page 21 and 22: Mojave River Forks Regional Park: A
Page 23 and 24: oriented commercial uses are expect
Page 25 and 26: HCP would include mitigation measur
Page 27 and 28: 3.1.3.12 City of RidgecrestThe City
Page 29 and 30: It is a goal of the town’s genera
Page 31 and 32: • Inyo California Towhee (April 1
Page 33 and 34: (i) The taking will be incidental;(
Page 35 and 36: handled, and number accidentally ki
Page 37 and 38: 3.1.5 California Endangered Species
Page 39 and 40: Obtaining an Incidental Take Permit
Page 41 and 42: Monitoring: Monitoring is often the
Page 43 and 44: is so restrictive that project dela
Page 45 and 46: excess moisture. A minus 4 is consi
Page 47 and 48: Air BasinsN190I n y o C o395Ridgecr
Page 49 and 50: Federal PM10 Planning AreasN190Owen
Page 51: POLLUTANTOzone (O 3 )RespirablePart
Page 55 and 56: subtraction of transported ozone in
Page 57 and 58: The general soil information and ma
Page 59 and 60: The Marine Corps Ground Combat Cent
Page 61 and 62: The most permeable basin-fill depos
Page 63 and 64: Surface water was and is the major
Page 65 and 66: A relatively small number of introd
Page 67 and 68: freshwater or alkali wetlands, or o
Page 69 and 70: 3.3.2 Desert Tortoise3.3.2.1 Regula
Page 71 and 72: progress toward meeting the overall
Page 73 and 74: “higher density” and “lower d
Page 75 and 76: several seasons (Esque 1994 in Aver
Page 77 and 78: Assistant District Manager Molly Br
Page 79 and 80: • Since 1975, federal land manage
Page 81 and 82: “52 mi 2 of higher density tortoi
Page 83 and 84: 1984 Tortoise Range and Density Map
Page 85 and 86: Higher Density Tortoise Sign Count
Page 87 and 88: When data for the three lowest sign
Page 89 and 90: Occurrence of Tortoises Relative to
Page 91 and 92: Regional Declines in the Four DWMAs
Page 93 and 94: Tortoise Distribution within the Re
Page 95 and 96: Boarman (pers. comm., Nov 2002) has
Page 97 and 98: tortoises are either extirpated (La
Page 99 and 100: sites surveyed by LaRue between 199
Page 101 and 102: aseline data are lacking. Grasses p
Page 103 and 104:
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
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3.3.6.5 Golden EagleLife History: T
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The towhee recovery plan establishe
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Regulatory Status: Federal Endanger
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3.3.6.15 Western Yellow-billed Cuck
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Other major threats are flood contr
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Population Status in the Planning A
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on the inaccessible mountain slopes
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3.3.8.8 Kern BuckwheatLife History:
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Threats Affecting the Mojave Monkey
Page 193 and 194:
3.3.8.16 Red Rock PoppyLife History
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populations show intergradation wit
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3.4.1.1 Regional EnvironmentIn tota
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Table 3-37Average Annual Units Cons
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2002 SOUTHERN CALIFORNIAEMPLOYMENT
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TABLE 3-382000 CENSUS DEMOGRAPHIC C
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to undergo a dramatic reversal to t
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3.4.1.5 Study Area Property Valuati
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The supply of private property in t
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ALLOTMENT NAME TYPE OF LIVESTOCK FO
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Grazing AllotmentsNOlanchaDarwinTun
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ALLOTMENT NAMEALLOTMENTACRESP. L. 1
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3.4.3 Mineral Potential and Develop
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Mineral Potential, Active and Inact
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Mineral Potential, Active and Inact
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development based on the results of
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MANAGEMENT AREATable 3-46Potential
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A third item, yttrium (on the USBM
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the California Department of Conser
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Table 3-49 shows the number of mini
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produces about 75,000 tons per year
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Table 3-50Most Important Deposits B
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3.4.3.5 Coolgardie MesaThe Coolgard
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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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