environmental assessment us border patrol, tucson sector

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Table 3-1, continuedDouglas FOB EA DraftAugust 2011Common NameScientific NameFederalStatus*Potential to Occur Within or Immediately Adjacent to AlternativeSitesMammalsJaguar Panthera onca ENone; inhabits desertscrub up through subalpine conifer forests; mostcommonly found near water in warm, tropical savannas and forests and inmountainous areas with available tree cover and water.Lesser long-nosed batLeptonycteris curasoaeLow; desertscrub habitat with agave as food plants and potential roost areasEyerbabuenaeare present within the project area; however, no columnar cacti are present.Ocelot Leopardus [Felis] pardalis E None; inhabits desertscrub habitats with dense brush/cover in Arizona.Source: USFWS 2010; *Federal Status: E = endangered; T = threatened; C = candidate; EXP = experimental population; NE = non-essential, CH = criticalhabitat3-21
3-221234567891011121314151617181920212223242526272829303132333435363738394041424344454647occupied or unoccupied through parts or all of a breeding season. Female lesser long-nosed batsarrive at known maternity roosts in southwest Arizona as early as April, continuing through mid-July (USFWS 1997). These maternity colonies begin to disband by September. Both males andfemales can be found in transient or maternity roosts from September to as late as earlyNovember. Lesser long-nosed bats eat nectar and fruits of columnar cacti and nectar ofpaniculate agaves, and as such, they are considered to be an important dispersal and pollinationvector for these species. Lesser long-nosed bats are known to travel 30 miles to reach suitableconcentrations of forage.The potential for lesser long-nosed bats to be present within or near the project area is very low;however, potential day roosting sites were observed at the Alternative 4 site during the May 2011survey. The landscapes of the rocky ridge on the eastern portion of the site have the highestpotential to support lesser long-nosed bats. No individual bats or guano were seen during thebiological survey. Likewise, no columnar cacti were observed on the rocky ridge. The nearestknown lesser long-nosed bat roost site is documented approximately 3 miles southeast of theAlternative 4 site, and limited low-quality potential forage habitat containing sotol, yucca,century plant, and lechuguilla was observed at a relatively low density of approximately less thanone or two plants per acre on the rocky ridge (see Photograph 3-2). There is also very sparselydistributed, low-quality potential forage habitat at the Preferred Alternative, Alternative 2, andAlternative 3 sites; however, these sites are in close proximity to the potential day roosting sitesat the Alternative 4 site, and they are also approximately 3 miles from the nearest known roostsite.3.7.1.2 Critical HabitatThe ESA also calls for the conservation of Critical Habitat. Critical Habitat consists of the areasof land, water, and air space that an endangered species needs for survival. Critical Habitat alsoincludes such things as food and water, breeding sites, cover or shelter, and sufficient habitatarea to provide for normal population growth and behavior. One of the primary threats to manyspecies is the destruction or modification of essential habitat by uncontrolled land and waterdevelopment.Seven Federally listed species have designated Critical Habitat in Cochise County: beautifulshiner, Gila chub, Huachuca water umbel, Mexican spotted owl, southwest willow flycatcher,Yaqui catfish, and Yaqui chub. One species, the San Bernardino springsnail, has proposedCritical Habitat in Cochise County (USFWS 2011a). While these species have designatedCritical Habitat within the county, none of the alternative sites for the proposed FOB are withinany of the designated Critical Habitat units (USFWS 2011a). Approximately 3 miles southwestof the project area on the San Bernardino NWR, there is designated Critical Habitat for beautifulshiner, Yaqui catfish, and Yaqui chub (Figure 3-3).3.7.1.3 San Bernardino NWRThe San Bernardino NWR is located approximately 3 miles southwest of the project area (Figure3-3). The refuge was established on April 1, 1982, under authority of the ESA and the Fish andWildlife Act of 1956 in order to conserve plants and wildlife species, including fish, that arelisted as endangered or threatened. These species include the beautiful shiner, Yaqui catfish,Yaqui chub, Yaqui topminnow, Chiricahua leopard frog, and Huachuca water umbel (USFWS2011b). Critical Habitat is established on the refuge for the beautiful shiner, Yaqui catfish, andDouglas FOB EADraftAugust 2011
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EXECUTIVE SUMMARYINTRODUCTION:This
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ES-3environment, but at different l
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Page 26 and 27: Douglas FOB EA DraftAugust 2011Tabl
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Page 32 and 33: Perimeter BufferX X X X X X X X X X
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Page 52 and 53: 3-5PROJECTLOCATIONAlternative 4Doug
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Page 112 and 113: SECTION 6.0REFERENCES
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SECTION 7.0ACRONYMS AND ABBREVIATIO
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SECTION 8.0LIST OF PREPARERS
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APPENDIX ACORRESPONDENCE
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FW: EA Douglas Station's Area of Op
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COUNTYApacheApacheApacheApacheApach
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COUNTYCochiseCochiseCochiseCochiseC
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CALCULATION SHEET-COMBUSTIBLE EMISS
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CALCULATION SHEET-FUGITIVE DUST-CON
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CALCULATION SHEET-SUMMARY OF EMISSI
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