Bureau of Land Management's Decision Record and Environmental

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Jersey Valley Geothermal Development Project Environmental Assessment: NV063 -EAO8-09 1 3.7.2 Environmental Consequences 3.7.2.1 Proposed Action The potential for erosion within the Jersey Valley Unit Area is slight to moderate. The potential for erosion within the the transmission line corridor is moderate to high. Surface disturbance and vegetation removal during construction of proposed project facilities within the Jersey Valley Unit Area and transmission line corridor would increase the potential for erosion through exposure of denuded surfaces. Based on implementation of environmental protection measures specified by Ormat, water would be applied to the ground during construction as necessary to control dust (see Section 2.1.11). Each of the well pads, access roads and the power plant site would be surfaced with aggregate which would minimize dust and stabilize erosive soils. Additionally, disturbed areas would be reclaimed in accordance with applicable BLM requirements (see Section 2.1.10). An NDEP-BAPC Surface Area Disturbance Permit, documenting the areas of proposed disturbance and the best practical dust control methods to be use, will be required for activities conducted within the Jersey Valley Unit Area and transmission line corridor because the surface disturbed within each area would be greater than 5 acres (see Section 3.2). Implementation of the applicable best practical dust control methods, through compliance with the Surface Area Disturbance Permit, would minimize fugitive dust emissions and soil erosion from wind and water during construction, operation and decommissioning of the proposed Project. 3.7.2.2 Alternative 1 The construction, operation and maintenance of Alternative 1 would differ from the Proposed Action only by the small increase (0.25 acre) in the total permanent surface disturbance. The impacts of Alternative 1 to soils would not be different from that of the Proposed Action. 3.8 VEGETATION 3.8.1 Affected Environment Differences in the kind of vegetation are closely related to the kind of soil. Soils within the Jersey Valley Unit Area and the transmission line corridor were mapped by the USDA, Natural Resource Conservation Service (NRCS) in the Lander County, North Part, soil survey and the Pershing County, East Part, soils survey (see Section 3.7.1). Vegetation communities mapped within the Jersey Valley Unit can be found in Figure 16 and Figure 17). - 58 -
LEGEND Vegetation Community [J EZI Great Basin Foothilt and Lower Montana Riparian Woodland and Shrubland Great Basin Pinyoc-Juniper Woodland Great Basin Xenc Mixed Sagebrush Shrubland Inter-Mountain Basins Big Sagebrush Shrubland Inter-Mountain Basins Big Sagebrush Steppe Inter-Mountain Basins Ctiff and Canyon Inter-Mountain Basins Greasewood Flat Inter-Mountain Basins Mixed Salt Desert Scrub Inter-Mountain Basins Montane Sagebrush Steppe Inter-Mountain Basins Semi-Desert Grasstand Invasive Annual Grassland Invasive Annual and Biennial Fcrrbland • Construction Water Source — Existing Access Road Proposed Access Road — 120kV Power ROW - Proposed Action jJersey Valley Geothermal Unit Area (NVN-83483X) Geothermal Lease Boundary Proposed Power Plant Location Construction Water Pipeline Construction Water and Injection Pipelines Water, Injection, and Production Pipelines Injection Pipeline Injection and Production Pipelines W Production Pipeline Currently Approved Gravel Source United States Department of the Interior Bureau ot Land Management - Mount Lewis Field Office 50 Bastian Road Banle Mountain, NV 89820 No warranty is made by thu Bureau at Land Managsmenta,tn the atcurracy reliability or non,pteteress vi mesa data torindmduatusooraggregatnuse atfl other data The data shower untie ma p uses the xnieersatTrarsmercator(Zore 15) 000rdnatesystemard uses the NADBS poojeotiun Map Ode Mardi 6 2010 0 0.25 0.5 1 Miles W•E
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In Reply Refer To: N-881 18 3200 (N
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The BLM MLFO has determined that in
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APPEAL PROVISIONS Decisions may be
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Al. Vicinity Map A2. Unit Map A3. R
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tsgend Al Unit Map • B. sflpa Wta
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ATFACHMENT B ENVIRONMENTAL ASSESSME
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Ormat Nevada, Inc. Jersey Valley Ge
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Jersey Valley Geothermal Developmen
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€C5- N. •3CdCd N. 9.Od N. “G1
Page 30 and 31: Figure 3: Jersey Valley Unit Area a
Page 32 and 33: Jersey Valley Geothermal Developmen
Page 48 and 49: LEGEND I Jersey Valley Staging Area
Page 50 and 51: LEGEND • J T27N, R4OE Alternative
Page 52 and 53: I-i Figure 9: Jersey Valley Unit Ar
Page 54 and 55: Figure 10: Recommended Construction
Page 56 and 57: NOTES 1 HEAVY ANGLE STRUCTURES WILL
Page 78 and 79: LEGEND Soil Association Symbol 1340
Page 82 and 83: LEGEND • Construction Waler Sourc
Page 124 and 125: Appendix A: Geothermal Lease Stipul
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09/07/2005 11:55 817758615710 PAGE
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D8/O7/200S 11:55 81775961b710 PAGE
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D8/O7/2OCE 11:55 91 77 59 S1E.719 P
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Ds/7f2OO6 11:55 817753B16710 PAGE 0
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09/07/2006 11:55 917758616710 PAGE
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08/07/2606 11:55 817758616716 PAGE
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Finding of No Significant Impact Fo
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1 NI::- •: I, — Ii
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The “wetlands” potentially impa
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The EA’s mitigation and permit ap
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• •., •• ‘t! •: •*
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Form 2800- Issuing Office 14 (Augus
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I Table 1: Legal Description of Tra
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Jersey Valley Master Title Plat and
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— Figure 12: Jersey Valley Unit A
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9. The Holder shall comply with all
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shall be supported by a stipulation
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Form 2800- 14 (August 1985) UNITED
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Table 1: Legal Description of Trans
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Buffalo Valley (NVN-83484X) E Jerse
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May 10, 2010 N-87409 EXHIBIT B 1.0
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approved in writing by the Authoriz
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(4 4
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Form 2800- Issuing Office 14 (Augus
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—y . —i I I RO.*D 10 1. I. —
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____________ Buffalo Valley Jersex
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May 10, 2010 N-88390 EXHIBIT B 1.0
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shall be supported by a stipulation
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Form 2800- 14 (August 1985) UNITED
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4 — - FIOAD1O : c:ç • •.•
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A PA a,. 0.25 i8’ NoUm Maptent VV
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£vIes C — — 42002211 ) 0.5 1 2
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,t.
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•(.1 •. ., . . - • ..a -. - j
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The Authorized Officer must approve
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Attachment E CONDITIONS OF APPROVAL
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Migratory Birds Attachment E CONDIT
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Migratory Birds Attachment E CONDIT
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Lands & Realty Attachment E CONDITI
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ATTACHMENT F EA COMMENT RESPONSES T
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for increased patrols to the Jersey
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U, C’1 CC) 0 CD 0 CD 0) C 0 CD C)
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Bureau of Land Management's Decision Record and Environmental

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