Draft Environmental Impact Statement for Roca Honda Mine

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Chapter 2. Alternatives, Including the Proposed Action Comparison of Alternatives This section provides a summary of the effects of implementing each alternative. Information in table 3 is focused on activities and effects where different levels of effects or outputs can be distinguished quantitatively or qualitatively among alternatives. 62 DEIS for Roca Honda Mine, Cibola National Forest
Table 3. Impact comparison matrix Topic Alternative 1 – No Action Geology and Soils • No disturbance of surface topography and soils on Sections 9, 10, and 16. • No excavation within Westwater Canyon Formation, no extraction of uranium ore, and no backfilling of excavated spaces and rooms. • In sum, would have essentially no impacts on geology and soils at the RHR permit site. Alternative 2 – Proposed Action (Two-shaft alternative) • Hundreds of thousands to millions of cubic yards of ore and nonore rock would be mined and extracted over the life of the mine. • Permanent changes to the geologic character and structure of large volumes within the Westwater Canyon Member of the Morrison Formation. • Overall impacts to geology would be direct, long term, localized, moderate, probable, and of slight precedence or uniqueness. • Impacts on geology would be less than significant. • Direct, medium term to long term, localized adverse impacts on soils at mine site. • Placement of treated water (water reuse) pipeline would have negligible, short-term, localized effects on soils. • Upon completion of reclamation, soils should be stabilized sufficiently to support restoration of vegetation. • Disturbed soils would not recover 100 percent of their predisturbance condition for centuries. • In conclusion, impacts on both geology and soils would be less than significant. Chapter 2. Alternatives, Including the Proposed Action Alternative 3 – One-shaft Alternative • Impacts on geology very similar to alternative 2’s impacts. • Impacts on geology would be less than significant. • Impacts on soils of a similar nature to those of alternative 2, but reduced in scale. • Alternative 3 reduces alternative 2’s area of surface disturbance overall by 29%; 155 acres vs 218 acres. • Alternative 3 has a lower potential to disturb soils than alternative 2. • In sum, impacts on soils would be less than significant. DEIS for Roca Honda Mine, Cibola National Forest 63
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United States Department of Agricul
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Environmental Impact Statement for
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Summary Roca Honda Resources, LLC (
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• Potential effects on the charac
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Mine Operation Summary Mine operati
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Resource Impacts and Mitigation •
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Resource Impacts and Mitigation num
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Contents Chapter 1. Purpose of and
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Contents Table 29. State of New Mex
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Contents Table 94. Food stamp enrol
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Contents Figure 66. Aerial image of
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H1N1 Influenza A virus, subtype H1N
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STD sexually transmitted disease SW
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Chapter 1. Purpose of and Need for
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Chapter 3. Affected Environment and
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Figure 33. Permit area watershed an
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Environmental Consequences Surface
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Construction Phase Effects Chapter
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Table 12. Storm water controls for
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Best Management Practices Chapter 3
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Effects on Sediment Transport and D
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Figure 45. Modeled hydrograph for S
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Figure 47. Modeled hydrograph for C
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Pollutant and Averaging Time Chapte
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Climate and Greenhouse Gases Chapte
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Regulatory Review Chapter 3. Affect
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Radon-222 Emissions Chapter 3. Affe
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Figure 48. Vegetation communities i
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State Listed Plant Species Chapter
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Species Status Habitat and Distribu
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Common Name (Scientific name) Black
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Common Name (Scientific Name) Gunni
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Table 39. Criteria for rating impac
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Wildlife Mortality Chapter 3. Affec
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Table 40. Impact characterization f
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Transportation Chapter 3. Affected
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Figure 57. Nearby recreation sites
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Table 41. Impact characterization f
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Minority Populations Chapter 3. Aff
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Figure 58. Distribution of minority
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High school graduates, percent of p
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Earnings Chapter 3. Affected Enviro
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Public Finance Chapter 3. Affected
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providing an estimate of the “rip
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Tax Revenue Chapter 3. Affected Env
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Table 61. Household characteristics
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Tribal History Chapter 3. Affected
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Natural Resources Chapter 3. Affect
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Physical APE Chapter 3. Affected En
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Agricultural Fields Chapter 3. Affe
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• Removal of a property from its
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Impacts to Natural Resources with C
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Site No. Project Section Land Statu
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Visual Resources Affected Environme
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Figure 64. View looking north from
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Alternative 1 Chapter 3. Affected E
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Environmental Consequences Chapter
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New Mexico 1.11 (0.98 - 1.25) Cibol
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Magnitude Descriptor Precedence or
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Noise Chapter 3. Affected Environme
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Resource Area Cultural and Historic
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Cumulative Effects Chapter 3. Affec
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Chapter 4. Consultation and Coordin
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Chapter 4. Consultation and Coordin
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Glossary Air-Quality Control Region
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References Cited (ACHP, 2005). Advi
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References Cited (Basin Coordinated
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References Cited (Brugge et al., 20
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References Cited (Census, 2011). U.
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References Cited (DesertUSA, 2011).
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References Cited (Gordon, 1961). Go
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References Cited (Jackson, 2002). J
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(NatureServe, 2010a). NatureSevere.
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References Cited (NMDH, 2010c) New
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References Cited (NRGNHA, 2011). No
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References Cited (RHR, 2011a). Roca
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References Cited (Stacier and Guzy,
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References Cited (USEPA, 1975). U.S
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References Cited (USFS, 2001). U.S.
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References Cited (USFWS, no date).
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References Cited (WildEarth Guardia
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Index E economic impacts - 15, 73,
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Index N National Environmental Poli
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Index W waste - 18, 40, 46, 56-57,
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Draft Environmental Impact Statement for Roca Honda Mine

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