APPENDIX F-M 

Biological Assessment

BIOLOGICAL ASSESSMENT FOR THE

DESERTXPRESS PROJECT

P REPARED FOR :

U.S. Department of Transportation 

Federal Railroad Administration 

1200 New Jersey Ave, S.E. 

Washington, DC 20590 

Contact: Wendy Messenger 

202‐493‐6396 

P REPARED B Y :

ICF International 

630 K Street, Suite 400 

Sacramento, CA 95814 

Contact: Will Kohn 

916‐737‐3000 

December 2010

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ICF International. 2010. Biological Assessment for the DesertXpress 

Project. July. (ICF 06334.06.) Irvine, CA. Prepared for Federal Railroad 

Administration, Washington, DC. 

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Biological Assessment for the DesertXpress Project i December 2010

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Contents

Page

Biological Assessment for the  DesertXpress Project............................................................................ 1

Introduction............................................................................................................................................1

Description of the Proposed Action ....................................................................................................... 2

Rail Alignment Features................................................................................................................... 2

Station and Operations, Maintenance, and Storage Facilities ........................................................ 2

Proposed Action............................................................................................................................... 4

Categories of Impacts ...................................................................................................................... 6

Action Area .............................................................................................................................................6

Environmental Baseline Conditions ....................................................................................................... 7

Listed Species & Critical Habitat in the Action Area............................................................................... 9

Desert Tortoise ................................................................................................................................9

Recovery Units............................................................................................................................... 11

Critical Habitat ............................................................................................................................... 11

Effects of the Proposed Action............................................................................................................. 11

Direct and Indirect Effects ............................................................................................................. 11

Interrelated Actions....................................................................................................................... 16

Interdependent Actions................................................................................................................. 16

Cumulative Effects......................................................................................................................... 16

Proposed Mitigation............................................................................................................................. 16

Adopted Conservation Measures.................................................................................................. 16

Conclusions and Determination ........................................................................................................... 20

Desert Tortoise .............................................................................................................................. 21

References............................................................................................................................................21

Appendix A   Project Alignment Overview Maps

Appendix B   Detailed Project Alignment Impact Maps

Appendix C   Location of Desert Tortoise Sign from Limited Survey Along the Proposed

Action

Appendix D   Segment 4C Preliminary Locations for Tunnels, Aerial, and At‐Grade

Crossings

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Tables

Table On Page

1 Temporary Construction Areas with Temporary Impacts to Desert Tortoise Habitat .................... 4

2 Summary of Vegetation Communities and Other Land Use Types in the Project Study

Area.................................................................................................................................................. 7

3 Temporary and Permanent Impacts on Suitable Desert Tortoise Habitat in California................ 14

4 Temporary and Permanent Impacts on Ruderal Vegetation in California .................................... 15

5 Temporary and Permanent Impacts on Desert Tortoise Habitat in Nevada ................................. 15

6 Temporary and Permanent Impacts on Critical Habitat................................................................ 15

7 Temporary and Permanent Impacts on Desert Wildlife Management Units................................ 16

8 Compensatory Mitigation for Impacts to Desert Tortoise Habitat in California ........................... 20

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Biological Assessment for the  

DesertXpress Project

Introduction

The purpose of this Biological Assessment (BA) is to address the effect of the DesertXpress Project 

on federally listed threatened, endangered, or proposed listed species pursuant to Section 7 of the 

Endangered Species Act (ESA), and their designated critical habitat. This BA is prepared in 

accordance with legal requirements set forth under Section 7 of the federal ESA (16 U.S. Government 

Code 1536 (c)) and follows the standards established in the U.S. Fish and Wildlife Service (USFWS) 

ESA guidance. The Federal Railroad Administration (FRA), the federal lead agency for the proposed 

action, intends to authorize and permit the proposed action under Section 7 of the Endangered 

Species Act and intends this BA to initiate formal consultation with USFWS regarding the proposed 

action.  

The FRA has authority to regulate the safety of railroads, including the proposed project under 49 

U.S.C. 20101 et seq. FRA also manages financial assistance programs for rail capital investments, for 

which this project would be eligible. The Bureau of Land Management (BLM) has approval authority 

over the use of public lands under their control under 43 U.S.C. 1761, the Federal Land Policy and 

Management Act (FLPMA). The Surface Transportation Board (STB) has jurisdiction, pursuant to 49 

U.S.C. 10501(b), over the construction, acquisition, operation, and abandonment of rail lines, 

railroad rates and services, and rail carrier consolidations and mergers. The Federal Highway 

Administration (FHWA) has jurisdiction over the use of and/or modification of Interstate highway 

right of way under 23 CFR 1.23.  The BLM, STB, and FHWA are cooperating agencies for the project.  

Additional information regarding the regulatory authorities of the lead and cooperating federal 

agencies can be found in the Draft Environmental Impact Statement (DEIS) sections 1.4 Major

Authorizing Laws and Regulations and 1.5 Relationships to Other Federal Agency Policies, Plans, and

Programs. 

DesertXpress Enterprises, LLC (Applicant) proposes to construct and operate a privately financed 

interstate high‐speed passenger train between southern California and Las Vegas. The proposed 

action is to construct and operate a fully grade‐separated, dedicated, double‐track passenger‐only 

railroad along an approximately 200‐mile corridor, from Victorville, California, to Las Vegas, Nevada 

Figures 1 – 7 in Appendix A are overview maps of the proposed project. The Applicant proposes to 

construct the vast majority of the railroad immediately alongside Interstate 15 (I‐15) and/or within 

existing railroad corridors/rights‐of‐way. The project also crosses public lands managed by the 

BLM.  

A list of federally threatened, endangered, or proposed listed plant and wildlife species that have the 

potential to occur in the vicinity of the proposed action was obtained from the USFWS Ventura 

Ecological Services Office. The following federally listed (F) and state‐listed (California) (S) 

proposed (P), threatened (T), and endangered (E) species were suggested for this assessment. 

z Desert tortoise (Gopherus agassizii)—FT 

z Least Bell’s vireo (Vireo bellii pusillus)—FE 

z Southwestern willow flycatcher (Empidonax trallii extimas)—FE 

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Suitable nesting and foraging habitat for least Bell’s vireo and southwestern flycatcher within the 

vicinity of the proposed action occurs only within the Mojave River floodplain near Victorville, 

California. The proposed action does cross the Mojave River near Barstow (Figure 2 in Appendix A). 

However, suitable nesting and foraging habitat for least Bell’s vireo and southwestern flycatcher 

does not occur along this portion of the river. Due to the lack of suitable nesting or foraging habitat 

in the project area, the proposed action will not affect least Bell’s vireo or southwestern willow 

flycatcher. These species will not be discussed further in this BA. Suitable habitat for desert tortoise 

was determined to occur throughout the proposed action area in both California and Nevada.  

Critical habitat for desert tortoise occurs within the proposed action area in California. 

Description of the Proposed Action

The proposed action includes the construction, operation and maintenance of approximately 200 

miles of rail alignment, passenger stations, maintenance facilities, autotransformers and substations, 

electrical transmission lines, and temporary construction areas. These elements are further 

described below and illustrated in the DEIS and Supplemental Draft Environmental Impact 

Statement (SDEIS). 

Following completion of the Final Environmental Impact Statement (FEIS) and issuance of the 

Records of Decision (ROD), the Applicant will complete additional project design during an 

approximately 12 month period.  Once the additional design has been completed, the proposed 

project will be constructed within a period of approximately 48 months including simultaneous 

construction on multiple project spreads.  

Rail Alignment Features

The components of the rail alignment includes a 75 foot wide permanent right‐of‐way which would 

include the rail bed with tracks spaced 15 feet apart, concrete barriers, overhead electrical 

distribution and transmission lines, fencing, and access/maintenance area.  This 75 foot permanent 

right‐of‐way would also include culverts, bridges, or aerials at drainage crossings to allow the 

conveyance of surface flows across the project rail alignment right‐of‐way. The placement of these 

drainage crossings would match those of I‐15 when the alignment is adjacent to the roadway. The 

drainage design for other portions of the alignment would be developed as part of the project 

design‐build phase. 

Station and Operations, Maintenance, and Storage Facilities

The proposed action includes the following permanent physical facilities in addition to the rail 

alignment.  

Victorville Passenger Station

The Victorville Passenger Station 3b is proposed at the southwestern portion of the I‐15/Dale Evans 

Parkway interchange. This facility includes the permanent station buildings, parking lot and 

structures, and utilities within the proposed project footprint. The boundary of the facility would be 

fenced with permanent desert tortoise fencing. 

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Victorville Operations, Maintenance, and Storage Facility (OMSF)

The Victorville OMSF would be located immediately south of Victorville Passenger Station. The 

facility would include a train washing facility, repair shop, parts storage, and operations control 

center. The boundary of the facility would be fenced with permanent desert tortoise fencing. 

Autotransformers and Substations

The Electrical Multiple Unit (EMU) technology propulsion power would be delivered along the 

project right‐of‐way by an overhead contact electrical distribution system with poles and conductor. 

A series of autotransformers are proposed along the alignment and preliminary engineering 

identified the need for a total of 17 autotransformers, spaced at 10 to 12 mile intervals along the 

alignment. These autotransformers help to maintain and regulate the voltage along the line. Each 

autotransformer would require a physical footprint of about one‐tenth to one‐fifth of an acre and 

may be partially located within the 75 foot permanent right‐of‐way. 

Maintenance‐of‐Way Facility

The proposed action also includes a maintenance‐of‐way (MOW) facility. The MOW facility would be 

located on a 2.4 acre site containing a 5,200 square foot building, plus tail tracks, a radio signal 

tower, fuel storage, and other related facilities that would serve as a headquarters for DesertXpress 

employees charged with daily inspection of tracks and associated facilities to ensure ongoing safe 

operations. 

Utility Corridors

The proposed action includes three utility corridors, including connections at the Victorville OMSF 

and Baker MOW to connect the project to electricity sources.  The utility corridor associated with 

the Victorville OMSF and the Baker MOW would be approximately 6 miles and 1.2 miles in length, 

respectively.  Each of the utility corridor right‐of‐way would have a width of 100 feet. The 

permanent access road contained in the corridor would be approximately 10 feet wide. The utility 

line towers would range in height from 95 feet to 135 feet, depending upon land mark clearance. 

Tower spacing would range from 440 feet to 940 feet depending on tower height and necessary 

clearance. Each tower footprint would be approximately 24 square feet to 59 square feet in size, 

depending on the height of the tower.  The utility towers would use a typical voltage of 230Kv 

transmission, with 66Kv for power distribution. 

Temporary Construction Areas (TCA)

Construction of the proposed action would require the use of the temporary construction areas. The 

TCAs would be used during construction for project lay‐down and temporary storage of 

construction materials. The entire TCA would be bladed and graded with all vegetation removed. 

The temporary impact areas would be rehabilitated and restored once construction is completed 

(Table 1). 

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Table 1. Temporary Construction Areas with Temporary Impacts to Desert Tortoise Habitat

TCA No. Location

Size

(acres)

Segment(s)

Served

2C1  Southwest of Barstow, along the 

northeast side of the I‐15 / Highway 58 

interchange 

1.01  2C 

5  East of Yermo, along north side of I‐15 

at Yermo Road/I‐15 interchange 

5.23  2A 

6  Along south side of I‐15, southwest of  

the I‐15/Field Road interchange 

5.81  3B 

7  Along north side of I‐15 near the Basin 

Road interchange 

3.50  3B 

9  Northeast of Baker, between I‐15 and 

Baker Blvd, adjacent to the Baker MOW 

8.40  3B 

10  North of I‐15 at Cima Road  5.67  3B 

4C1  Along I‐15, near Mountain Pass south of 

Clark Mountains 

5.18  4C 

4C2  North of Mountain Pass in Clark 

Mountains, 1.25 miles north of I‐15 

0.65  4C 

4C3  North of Mountain Pass in Clark 

Mountains, 1.7 miles north of I‐15 

0.65  4C 

4C4  North of Mountain Pass in Clark 

Mountains, 7 miles north of I‐15  

9.70  4C 

4C5  North of Primm, northwest of I‐15  6.09  4C 

13  Along east side of I‐15, 3.5 miles north 

of Jean 

9.09 5B

Source:  CirclePoint, 2010.     

Proposed Action

The Proposed Action is a 200‐mile rail corridor between Victorville and Las Vegas consisting of rail 

alignments, station and maintenance facilities, substations, and transmission lines each of which is 

described in more detail below and depicted in Figures 1–87 in Appendix B.  The proposed action 

facilities within the urbanized portion of Barstow, Baker, and Las Vegas are not included in this 

analysis because they do not contain desert tortoise habitat. 

Segment 1

Segment 1 rail alignment is proposed along the north/west side of the I‐15 corridor. Segment 1 

would connect with the Segment 2C Side Running rail alignment near Lenwood Road approximately 

7 miles southwest of the community of Lenwood. This segment also includes: 

• Victorville Station 3b;  

• Victorville OMSF 2 facility; 

• autotransformers 2 and 3 (no desert tortoise habitat impacts); and  

• a 230 kV utility corridor. 

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Segment 2C/2A

The Segment 2C Side Running rail alignment is proposed along the north/west side of the I‐15 

through Lenwood, central Barstow, and eastward to Yermo and connects to Segment 3b. The rail 

alignment would maintain a side‐running configuration along the west/north side of the I‐15 

freeway through central Barstow and would cross over the Mojave River on a new bridge 

immediately adjacent to the existing southbound I‐15 bridge. 

In the vicinity of the I‐15/Fort Irwin Road interchange just west of Yermo the rail alignment would 

divert from the existing I‐15 freeway corridor (outside of the existing right‐of‐way) and would 

follow a northerly course around the community of Yermo for approximately 9 miles. The rail 

alignment would reconnect with the I‐15 freeway corridor approximately 1 mile east of the I‐

15/Yermo Road interchange, where the Segment 2A rail alignment would connect with the Segment 

3B rail alignment. 

This segment also includes: 

• a new bridge structure at the Mojave River; 

• TCAs 2C1 and 5; and 

• Autotransformer Site 4 and Site 5a. 

Segment 3B

The Segment 3B rail alignment would be located alongside theI‐15 freeway, predominately along 

the north side, within the existing freeway right‐of‐way from Fort Irwin Road to Mountain Pass, a 

distance of about 85 miles. Grade‐separated elevated structures would be incorporated for crossing 

roadways and at the I‐15 interchanges, from the on‐off ramps. In the Mountain Pass area, the 

Segment 3B rail alignment would connect with the Segment 4C rail alignment.  

This segment also includes: 

• TCAs 6, 7,8 (no desert tortoise habitat impacts), 9, and 10; 

• Autotransformer Site 6, Site 7, Site 8, Site 9, Site 10, Site 11, Site 12; and 

• Baker MOW. 

Segment 4C

The Segment 4C rail alignment would be approximately 21 miles long. The rail alignment would 

leave the I‐15 freeway right‐of‐way at Mt. Pass and extend northeast, passing through three new 

dual track tunnels through the Clark Mountain range. The Segment 4C rail alignment would travel 

northwardly from the Clark Mountains and would turn east to cross the California‐Nevada state line 

and connect back to the I‐15 freeway corridor north of Primm. North of Primm, the Segment 4C rail 

alignment would connect with the Segment 5B rail alignment. 

This segment also includes: 

• TCAs 4C1, 4C2, 4C3, 4C4, and 4C5; and 

• Autotransformer Site 13 and Site 14. 

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Segment 5B

The Segment 5B rail alignment would be located on the east side of I‐15 within the freeway right‐of‐

way between Primm and Jean. In this segment, the rail alignment would cross back to the west side 

of I‐15 at the existing UPRR tracks south of Sloan. Upon crossing over to the west side of I‐15, the 

Segment 5B rail alignment would connect with the Segment 6B rail alignment. 

This segment also includes: 

• TCA 13; and 

• Autotransformer Site 15. 

Segment 6B

The Segment 6B rail alignment would be located along the west side of the I‐15 freeway primarily 

within the freeway right‐of‐way. Segment 6B would be constructed at‐grade until reaching the I‐

15/Blue Diamond Road interchange in the Las Vegas metropolitan area, where the rail alignment 

would transition to an elevated structure through Las Vegas. No desert tortoise habitat would be 

impacted as a result of project implementation from 0.5 mile south of the I‐15 and St. Rose Parkway 

interchange to the project terminus in Las Vegas. 

This segment also includes: 

• Autotransformer Site 16b and Site 17 (no desert tortoise habitat impacts). 

Categories of Impacts

For the purposes of this biological assessment, impacts have been placed into three categories: 

Permanently disturbed areas – These include those project elements that would remain after project 

construction.  These areas would permanently convert desert tortoise habitat, critical habitat or 

Desert Wildlife Management areas to transportation use.  These include the 75 foot wide permanent 

rail alignment, the Victorville Station, the Victorville OMSF, autotransformers and substations, Baker 

MOW, Sloan MSF, and the access road and tower pads for the utility corridors. 

Temporary disturbance areas – These include the temporary construction area along the proposed 

right‐of‐way (approximately 162.5 feet on either side of the permanent rail alignment). These areas 

would include topsoil removal and stockpile, blading and grading, and construction activity 

including vehicular and equipment use and equipment stockpiling. Project components that are 

described in the SDEIS and the FEIS as temporary construction areas area are within project 

permanent disturbance areas, including some of the TCAs.  These areas have been incorporated into 

the analysis of permanent impacts. 

Action Area

USFWS defines an action area as “all areas to be affected directly or indirectly by the federal action 

and not merely the immediate area involved in the action” (50 CFR 402.02). The proposed action 

area is located in San Bernardino County, California, and Clark County, Nevada. Most of the proposed 

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action area is located within or adjacent to the I‐15 right‐of‐way and BLM lands in California and 

Nevada.   

The action area includes the 75‐foot‐wide permanent rail corridor, the temporary construction area 

that extends approximately 162.5 feet beyond permanent rail corridor, the permanent disturbance 

associated with the Victorville Station 3b, Victorville OMSF2, Baker MOW and the utility corridors.    

The action area also includes a 300 foot buffer beyond the limit of the rail alignment temporary 

disturbance and the Victorville Station 3b, Victorville OMSF, and the Baker MOW permanent 

disturbance due to potential direct adverse effects associated with project construction noise, dust, 

and potential desert tortoise relocations. Within portions of the project alignment that abut the I‐15 

facility, the buffer would not be extended over the roadway.   

The action area includes Project Segments 1‐6 ending 0.25 mile south of the I‐15 / St. Rose Parkway 

interchange in Clark County, Nevada. The SDEIS and FEIS indicated the project terminus is near 

Flamingo Road in Las Vegas, Nevada.  Since these areas do not impact desert tortoise or other 

federally listed species, they are not included in the BA analysis or the Section 7 consultation. 

Environmental Baseline Conditions

The environmental baseline includes State, tribal, local, and private actions already affecting the 

species or that will occur contemporaneously with the consultation in progress. Unrelated Federal 

actions affecting the same species or critical habitat that have completed formal or informal 

consultation are also part of the environmental baseline, as are Federal and other actions within the 

action area that may benefit listed species or critical habitat. The environmental baseline for the 

project is described in the DEIS and SDEIS Section 3.14 Biological Resources and DEIS Section 3.16 

Cumulative Impacts. 

The past and present impacts from all Federal, State, or private actions in the action area have 

substantially affected the environmental baseline.  The construction, operation, and improvements 

to the I‐15 roadway and right‐of‐way have reduced the quality and use of the adjacent desert 

tortoise habitat.  The BrightSource ISEGS facility located in the Ivanpah Valley consists of 

approximately 3,300 acres of permanent ground disturbance within suitable desert tortoise habitat.  

The suitable habitat within this somewhat isolated (by the Clark Mountains and the I‐15 corridor) 

portion of the Northeastern Recovery Unit has undergone considerable development resulting in the 

permanent loss of suitable desert tortoise habitat.  The proposed action of the DesertXpress project 

includes a portion of the ISEGS designated relocation area and comes within 0.25 mile of an ISEGS 

short‐distance translocation area. 

Table 2. Summary of Vegetation Communities and Other Land Use Types in the Project Study Area

Vegetation

Community Type

Associated Species Description Occurrence in Project

Study Area

Creosote Bush 

Shrubland 

A group of alliances: 

creosote bush may be 

the only shrub, other 

alliances are 

characterized by shared 

dominance with white 

Various substrates 

and settings, including 

sandy substrates, 

alluvial fans, bajadas; 

may occur on 

disturbed sites 

Very common 

throughout project 

study area 

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Vegetation

Community Type

Associated Species Description Occurrence in Project

Study Area

bursage and/or 

brittlebush; also desert 

holly, saltbush species, 

and many other shrubs 

may be present in low 

densities 

Desert Holly Shrubland  Creosote bush, other 

saltbush species, white 

bursage, brittlebush 

The most drought‐

tolerant scrub, 

occurring on rocky 

slopes, bajadas, playa 

edges 

Uncommon in the 

project study area 

Joshua Tree Wooded 

Shrubland 

A variety of shrubs, 

including big sagebrush, 

creosote bush, 

California buckwheat, 

brittlebush, blackbrush 

Alluvial fans, flat to 

gently sloping areas 

Occurs between Baker 

and Mountain Pass 

Saltbush Complex  Other saltbush species, 

creosote bush, white 

bursage, rabbitbrush 

Includes several 

alliances dominated 

by different saltbush 

species; many 

substrates and 

settings: sandy soils, 

washes, playas, playa 

edges, alkaline sites  

Very common 

throughout project 

study area 

Blackbrush Shrubland  California buckwheat, 

shadscale, white 

bursage, Ephedra sp., 

and a variety of other 

desert shrubs 

Alluvial slopes, rocky 

slopes, bajadas 

Occurs only in the 

Mountain Pass area 

Mesquite Shrubland 

(Intermittently 

Flooded)  

Saltbush species, 

sandbar willow, 

iodinebush 

Rarely flooded edges 

of washes, floodplains, 

playa edges 

Rare; occurs at a few 

sites west of Mountain 

Pass 

Barren (Disturbed, 

graded) 

May have sparse growth 

of mostly non‐native 

species, especially 

invasive annual grasses 

Various substrates 

and settings 

Common along the 

median and shoulders 

of Interstate 15 

roadway 

Agriculture (alfalfa, 

grazing) 

Alfalfa, a variety of 

pasture grasses 

Generally flat alluvial 

areas 

Occurs at the western 

end of the alignment 

east of Victorville 

Rural development  N/A  Usually flat to gently 

sloping sites, valley 

floors 

Predominantly at the 

western end of the 

alignment east of 

Victorville 

Urban  N/A  Usually flat to gently 

sloping sites, valley 

floors 

Cities of Victorville, 

Baker, Barstow, Primm, 

and Las Vegas, 

including adjacent 

urbanized areas 

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Listed Species & Critical Habitat in the Action Area

Desert Tortoise

Regulatory Status and Distribution

The Mojave population of the desert tortoise is federally and California state listed as threatened. In 

Nevada, desert tortoises are classified as a state protected and threatened species. The Mojave 

population includes those animals occurring in north and west of the Colorado River, in 

southeastern California, southern Nevada, northwestern Arizona, and southwestern Utah. 

The range of the Mojave population of the desert tortoise includes a portion of the Mojave Desert 

and the Colorado Desert subdivision of the Sonoran Desert at elevations below 5,000 feet. The 

Mojave Desert is located in southern California, southern Nevada, northwestern Arizona, and 

southwestern Utah. It is bordered on the north by the Great Basin Desert, on the west by the Sierra 

Nevada and Tehachapi Ranges, on the south by the San Gabriel and San Bernardino Mountains and 

the Colorado Desert, and on the east by the Grand Wash Cliffs and Hualapai Mountains of Arizona 

(USFWS 1994). 

Life History

The desert tortoise is most commonly found within desert scrub vegetation type, primarily in 

creosote bush scrub vegetation, but also in succulent scrub, cheesebush scrub, blackbrush scrub, 

hopsage scrub, shadscale scrub, and saltbush scrub (USFWS 1994). Within these vegetation types, 

desert tortoises can survive and reproduce where their basic habitat requirements are met. These 

requirements include a sufficient amount and quality of forage species; shelter sites for protection 

from predators and environmental extremes; suitable substrates for burrowing, nesting, and 

overwintering; various plants for shelter; and adequate area for movement, dispersal, and gene flow. 

Throughout most of the Mojave region, tortoises occur most commonly on gently sloping terrain 

with soils ranging from sand to sandy‐gravel and with scattered shrubs, and where there is 

abundant inter‐shrub space for growth of herbaceous plants. Throughout their range, however, 

tortoises can also be found in steeper, rockier areas. 

Desert tortoises spend the majority of time underground in burrows that are excavated in dry, often 

loamy soils under creosote or other large shrubs or in the banks of desert washes. Burrows range 

from pallets that barely cover a single tortoise to burrows over 10 feet long. The entrances of 

burrows are identifiable by their half‐moon shape, which corresponds to the profile of the tortoise 

shell. 

Above‐ground activity is closely related to the amount and timing of precipitation and the 

emergence of annual plants, which make up the majority of the desert tortoise diet. Generally, 

tortoises are active during the late winter and spring, though they may be active during the morning 

or early evening of summer months whenever summer rains offer the chance to replenish water 

reserves. By October, most tortoises have begun winter hibernation. 

Courtship and mating generally occurs during the spring. Between May and July, females lay 

between 3 and 14 ping‐pong ball–size eggs in sandy or friable soil, often at the entrance to burrows. 

Hatching occurs 90 to120 days later, mostly in late summer and fall (mid‐August to October). Eggs 

and young are untended by the parents and thus are quite vulnerable; pre‐reproductive mortality 

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averages 98% (Turner et al. 1987, Morafka et al. 1997). Maximum longevity in the wild is likely to be 

about 50 to 70 years, the norm being 25 to 35 years (Germano 1992, 1994), though most tortoises 

do not survive to sexual maturity (CDFG 2005). Their longevity helps compensate for their variable 

annual reproductive success, which is correlated with environmental conditions (USFWS 1994). 

Threats

Reasons for the determination to federally list the desert tortoise as threatened included significant 

population declines from a number of threats, mainly loss of habitat caused by construction projects 

such as roads, housing, and energy developments, and by conversion of native habitat to agriculture. 

Grazing and off‐highway‐vehicle activity have degraded additional habitat. Also identified as threats 

to desert tortoises are illegal collection by humans for consumption or pets, upper respiratory tract 

disease, predation on juvenile desert tortoises by common ravens (Corvus corax) and coyotes (Canis

latrans), and collisions with vehicles on paved and unpaved roads (CDFG 2005, USFWS 1994). 

Survey Methodology

Survey methods were developed in coordination with state and federal biologists during the 

December 19, 2006, meeting described above. Surveys were conducted in 2007 for a total of 

50 miles in California. No surveys were conducted in Nevada. The USFWS did not recommend 

conducting tortoise surveys along the portions of the project that are within the I‐15 right‐of‐way, 

but they requested that tortoise surveys be conducted in a representative number of drainage 

crossings along I‐15 that may allow tortoise movement between habitat on either side of I‐15. 

Tortoise surveys were conducted at 29 drainage crossings in the project study area. The drainage 

bed and banks at these crossings were surveyed using 30‐foot‐wide pedestrian transects at 

distances of 500 feet upstream and downstream on either side of I‐15 (a total of 1,000 feet per 

drainage) for a total of 21,000 feet (approximately 4 miles). 

Surveys were conducted by two biologists walking meandering transects within a 300‐foot wide 

corridor from the centerline of the alignment alternative. (The 300‐foot width of the corridor was 

the initial width of the construction corridor. The width was later changed to 400 feet, as described 

later in this document.) Where the alignment was immediately adjacent to the interstate, surveys 

were only conducted within a 150‐foot wide corridor on the habitat opposite the interstate. In areas 

where the corridor extends beyond railroad tracks, the survey area only included the area between 

the centerline of the alignment and the railroad tracks. 

All observed tortoises and tortoise sign (e.g., suitable burrows, pallets, scat, tracks, eggshells, and 

carcasses) were recorded on survey forms and location coordinates were collected using a Global 

Positioning System (GPS) unit. The observed tortoise sign has been mapped along the project 

alignment (Appendix C). 

Occurrence in the Action Area

The entire proposed action area lies within the range of the desert tortoise Mojave population. The 

limited desert tortoise survey resulted in observations of 2 carcasses, 6 Class 1‐3 burrows, 14 Class 

4‐6 burrows, 1 Class 1 pallet, 2 Class 2 pallets, and 2 Class 5 carcasses. 

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Recovery Units

The project occurs across three Mojave Desert tortoise recovery units.  These include the Western 

Mojave Recovery Unit and Eastern Mojave Unit in California and the Northeastern Mojave Recovery 

Unit in portions California east of Mt. Pass and Nevada. 

Critical Habitat

Critical habitat has been designated for the desert tortoise (59 FR 5820–5866; February 8, 1994). 

Critical habitat for desert tortoise within the action area is located on the north side of I‐15 east of 

Barstow in the Superior‐Cronese Critical Habitat Unit, north side of I‐15 west of Barstow, and on the 

north and south side of I‐15 east of Mountain Pass in the Ivanpah Critical Habitat Unit. No critical 

habitat in Nevada would be affected by the proposed action.  The project is anticipated to 

temporarily and permanently impact critical habitat adjacent to the I‐15 right‐of‐way.   

Mojave Desert tortoise critical habitat consists of the following primary constituent elements:  

• sufficient space to support viable populations within each of the six recovery units and 

provide for movements, dispersal, and gene flow;  

• sufficient quantity and quality of forage species and the proper soil conditions  to provide 

for the‐growth of such species;  

• suitable substrates for burrowing, nesting, and overwintering; 

• burrows, caliche caves, and other shelter sites;  

• sufficient vegetation for shelter from temperature extremes and predators; and  

• habitat protected from disturbance and human caused mortality. 

Effects of the Proposed Action

This section presents the potential direct, indirect, and cumulative effects of the proposed action on 

desert tortoise within the action area. This includes the effects of interrelated and interdependent 

actions.  

Direct and Indirect Effects

Direct effects are defined as the direct or immediate effects of a proposed action on a species or its 

habitat. Direct effects may result from the action and may include the effects of interrelated and 

interdependent actions. Indirect effects are effects that are caused by or will result from the 

proposed action and are later in time, but still reasonably certain to occur.  An interrelated action is 

an activity that is part of the proposed action and depends on the proposed action for its 

justification. An interdependent action is an activity that has no independent utility apart from the 

action under consultation. 

Direct effects of the project consist of both temporary and permanent effects.   The primary direct 

and indirect permanent effect of construction‐related activities includes injury or mortality of 

individual desert tortoises and removal of foraging habitat.   

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Biological Assessment for the DesertXpress Project 12 December 2010

ICF 06334.06

Direct permanent effects would occur within the 75 foot wide permanent rail alignment, the 

Victorville Station, the Victorville OMSF, autotransformers and substations, Baker MOW, Sloan MSF, 

and the access road and tower pads for the utility corridors.  In these areas vegetation would be 

removed and permanently lost.  This would constitute permanent conversion of the area from 

vegetative habitat to a transportation facility.  Desert tortoises in these areas would be permanently 

displaced and their natural movement corridors would be disrupted. 

Direct temporary effects would occur within the temporary construction area (outside the 

permanent right‐of‐way).  Temporary effects would include topsoil removal and stockpile, blading 

and grading, and construction activity including vehicular and equipment use of the area. In 

addition, temporary direct effects would include soil compaction, construction dust, water and 

surface water run‐off from the construction area, and construction‐related noise and vibrations 

from construction equipment.  The limits of these temporary direct effects are expected to 

extend approximately 300 feet beyond the direct temporary construction area.  These may 

result in the avoidance of the area by desert tortoises temporarily reducing available forage and 

access to burrows. 

Direct temporary effects resulting from desert tortoise being relocated from the temporary 

construction area may adversely impact other desert tortoise already residing in the area by 

temporarily modifying behavior, competing for burrows and forage. This may result in reduced 

habitat productivity adjacent to the proposed project alignment during construction.  The natural 

and project‐related restoration of the temporary construction area and desert tortoise dispersion 

may reduce the impacts to habitat productivity over time. 

Direct temporary effects resulting from the construction activity and presence of the construction 

crews is increased predation from ravens and coyotes attracted to the action area.  Ravens and 

coyotes are known to prey on juvenile tortoises and increased predator densities in the action area 

may result in direct mortality of the juvenile desert tortoise.

A permanent indirect effect of constructing and operating the proposed action is increased 

predation and mortality from perching and nesting ravens.   Once the facility has been constructed, 

the proposed action will provide electrical distribution poles in areas that currently have limited 

raven perching and nesting opportunities.  This may increase raven predation on juvenile desert 

tortoise along the alignment. 

As discussed above, disturbance of soils within the temporary construction areas could result in 

increased wind erosion of the soil. Transport of soil and sand can result in the degradation of soil 

and vegetation over a wider area than just area directly impacted. Large amounts of dust can have 

negative effects on the physiology of plants and may affect their productivity, resulting in 

diminished foraging potential for desert tortoises. Additionally, degradation of the soil would have 

negative effects on the ability of desert tortoises to create burrows. The softening of soils in the 

vicinity of the action area would lessen the stability of burrows and increase the likelihood of 

collapse. The potential of increased dust as a result of the proposed action would have an adverse 

effect on both desert tortoise foraging and burrowing potential. 

Permanent and temporary indirect effects resulting from the introduction of non‐native grasses and 

forbs may include the reduction in desert tortoise forage and forage value. Many non‐native grasses 

and forbs are adapted to and promoted by soil disturbance and seeds are commonly transported on 

vehicles and by wind and water. Non‐natives often out‐compete native species because of high 

germination potential and high seed production, and they can become locally dominant.  The 

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Biological Assessment for the DesertXpress Project 13 December 2010

ICF 06334.06

associated decline in forage species diversity would be likely to detrimentally affect desert tortoises 

in both the short and long term. Furthermore, non‐native grasses and forbs can provide fuel to 

support wildfires.  

A permanent indirect effect of many rail lines is the potential for wildland fire which may impact 

natural habitat.  The proposed project would have little potential for such fires.  Because the 

proposed project is a high speed train, its construction and operation are substantially different than 

typical freight trains.  The proposed project would be constructed and fences within a 75 foot 

permanent right‐of‐way that are cleared of vegetation and maintained in this state to accommodate 

high speed train traffic.  Due to the lack of vegetation within the right‐of‐way the project will have a 

very low potential for starting wildland fires along the rail alignment. 

A permanent indirect effect resulting from the modification to the natural drainages, particularly 

within Segment 4C, is the potential for downstream impacts to the natural hydrology and Mojave 

wash scrub of the alluvial fan.  This could modify and reduce the desert tortoise forage base within 

the ephemeral drainages downstream from the project alignment.  Furthermore, maintenance and 

clean‐out of the project culverts, bridges and aerials could result in additional modification of 

restored tortoise habitat adjacent to the permanent rail right‐of‐way and downstream through 

sediment transport and erosion.  

In California, construction of the proposed action would result in direct temporary impacts on 

3,286.43 acres of suitable desert tortoise habitat (Table 3). The proposed action would result in the 

direct permanent loss of 1,269.23 acres of suitable desert tortoise habitat (Table 3).  The proposed 

action would also result in temporary and permanent net loss of ruderal vegetation in California 

(Table 4).  The total ground disturbing activity within desert tortoise habitat in California is 4,570.33 

acres (Table 3 and Table 4). 

In Nevada, construction of the proposed action would result in direct temporary impacts on 812.61 

acres of suitable desert tortoise habitat (Table 5). The proposed action would result in the direct 

permanent loss of 240.58 acres of suitable desert tortoise habitat (Table 5).  

The proposed action would result in 1,400.29 acres of direct temporary and 452.95 acres of direct 

permanent impacts to designated critical habitat for desert tortoise (Table 6).  The permanent 

impact to the Ivanpah Critical Habitat Unit and the Superior‐Cronese Critical Habitat Unit is 0.032% 

of each unit’s total acreage.  The majority of these impacts are to designated critical habitat 

immediately adjacent to the existing I‐15 roadway.  The critical habitat impacted by the proposed 

action is providing a limited functionality due to the proximity to the I‐15 corridor.  This proximity 

results in increased raven and coyote predation on juvenile tortoise, a modified vegetation structure 

due to the presence of weeds, and habitat that is not protected from disturbance or human caused 

mortality. The implementation of the proposed action is not expected to change the critical habitat 

function to serve the intended conservation purpose or inhibit the ability of the primary 

constituent’s elements to be functionally established within the critical habitat. 

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Biological Assessment for the DesertXpress Project 14 December 2010

ICF 06334.06

Table 3. Temporary and Permanent Impacts on Suitable Desert Tortoise Habitat in California

Project Component

Temporary

Impacts (Acres)

Permanent

Impacts (Acres)

Rail Alignment    

1  321.05  33.45 

2C  120.95  30.68 

2A  327.98  77.58 

3B  1,859.15  640.45 

4C  578.03  135.67 

TCA    

2C1  1.01  ‐‐ 

5  5.23  ‐‐ 

6  5.81  ‐‐ 

7  3.50  ‐‐ 

9  8.40  ‐‐ 

10  5.67  ‐‐ 

4C1  5.18 

4C2  0.65  ‐‐ 

4C3  0.65  ‐‐ 

4C4  9.70  ‐‐ 

Autotransformers

2  ‐‐  0.04 

4  ‐‐  0.08 

5a  ‐‐  0.13 

6  ‐‐  0.08 

7  ‐‐  0.08 

8  ‐‐  0.08 

9  ‐‐  0.03 

10  ‐‐  0.08 

11  ‐‐  0.08 

12  ‐‐  0.08 

13 

MSF/MOW/Station

‐‐  0.08 

Baker MOW   3.45  3.96 

OMSF 2   27.23  98.31 

Victorville Station  ‐‐  209.78 

Utility Corridor    

Baker Utility Corridor  2.80  2.34 

Victorville Utility Corridor  36.15  36.17 

Total  3,286.44  1,269.23 

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Biological Assessment for the DesertXpress Project 15 December 2010

ICF 06334.06

Table 4. Temporary and Permanent Impacts on Ruderal Vegetation in California

Project Component

Temporary

Impacts (Acres)

Permanent

Impacts (Acres)

Rail Alignment    

2C  5.15  1.95 

2A  0.01  ‐‐ 

3B  7.57  ‐‐ 

Total  12.72  1.95 

Table 5. Temporary and Permanent Impacts on Desert Tortoise Habitat in Nevada

Project Component

Temporary

Impacts (Acres)

Permanent  

Impacts (Acres)

Rail Alignment    

4C  121.93  32.03 

5B  555.51  175.50 

6  119.99  32.75 

TCA    

4C5  6.09  ‐‐ 

13  9.09  ‐‐ 

Autotransformers    

14  ‐‐  0.08 

15  ‐‐  0.08 

16b  ‐‐  0.16 

Total  812.61  240.58 

Table 6. Temporary and Permanent Impacts on Critical Habitat

Critical Habitat Unit

Temporary

Impacts (Acres)

Permanent  

Impacts (Acres)

Superior Cronese CHU  868.81  249.97 

Ivanpah CHU  531.48  202.98 

Total  1,400.29  452.95 

Barriers to Desert Tortoise Movement

Segment 4C includes approximately 18.7 miles of the proposed action alignment that deviates from 

the existing I‐15 corridor and traverses undeveloped public lands east of I‐15. This proposed section 

of the alignment would result in reducing the ability of desert tortoise in this area to move across 

the proposed project alignment. The 18.7‐mile portion of Segment 4C would create a barrier to 

desert tortoise movement, and potentially isolating the block of habitat between the proposed 

action alignment and I‐15. The installation of appropriately constructed culverts along the proposed 

route would mitigate some of these impacts; however, desert tortoise access to and utilization of the 

isolated block of habitat is expected to be reduced. This reduction would reduce the availability of 

forage and population interaction. 

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Biological Assessment for the DesertXpress Project 16 December 2010

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Temporary and Permanent Impacts on Desert Wildlife Management Areas

Construction of the proposed action could result in a total of 1,339.34 acres of DWMAs (393.66 

acres of the Shadow Valley DWMA and 934.68 acres of Superior‐Cronese DWMA).  This includes 

726.36 acres of temporary and 208.32 acres of permanent impacts to the Superior‐Cronese DWMA 

and 290.64 acres of temporary and 103.02 acres of permanent impacts to the Shadow Valley DWMA 

(Table 7).  All of the impacts to DWMAs will occur within California. 

Table 7. Temporary and Permanent Impacts on Desert Wildlife Management Units

Desert Wildlife

Management Unit (DWMA)

Temporary

Impacts (Acres)

Permanent  

Impacts (Acres)

Superior‐Cronese  726.36  208.32 

Shadow Valley  290.64  103.02 

Total  1017.00  322.34 

Interrelated Actions

An interrelated activity is one that is part of the proposed action and depends on the proposed 

action for its justification. There are no interrelated effects for the proposed action. 

Interdependent Actions

Interdependent actions have no independent utility apart from the action under consultation. There 

are no interdependent actions resulting from the proposed action. 

Cumulative Effects

Cumulative effects are those impacts of future State, local, and private actions that are reasonably 

certain to occur in the project area. Future Federal actions will be subject to the consultation 

requirements established in section 7 of the Endangered Species Act, and, therefore, are not 

considered cumulative to the proposed project. There are no known actions that are likely to occur 

in the project area. 

Proposed Mitigation

Adopted Conservation Measures

The following proposed mitigation is based on mitigation measures in the EIS. 

General Mitigation Measures

z All personnel working within the project area will attend an environmental awareness training 

program. The program will be presented by qualified biologists and include information on the 

life history of special‐status species that may be encountered during construction activities, the 

legal protection for each species, the definition of “take” for listed species, measures to protect 

special‐status species, reporting requirements, specific measures that each worker will need to 

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Biological Assessment for the DesertXpress Project 17 December 2010

ICF 06334.06

employ to avoid adverse impacts on individual sensitive species, a detailed description of 

environmental project commitments as described in the decision records (i.e., Record of 

Decision), right‐of‐way grants, and Biological Opinion, and penalties for violation of federal and 

state environmental laws. 

The following measures will be implemented during project construction: 

z Qualified biologists will be on site during any construction activity within or near special‐status 

species habitat to ensure the implementation and compliance of environmental commitments 

and avoidance measures. 

z Qualified biologists will have the authority to stop work if dangers to desert tortoises, or other 

special‐status wildlife species arise, and to allow work to proceed after the hazard has been 

removed. The USFWS Las Vegas and Ventura Ecological Services Offices, BLM Field Offices, and 

CDFG must be notified of any desert tortoise injury or death resulting from project‐related 

activities. 

z As part of the monitoring, the biologists will check construction areas immediately before 

construction activities each day to ensure that no special‐status wildlife species have moved into 

the construction area. If tortoises are discovered within the construction area, they will be 

relocated to adjacent tortoise habitat approximately 300 feet of the limit of disturbance. 

z The desert tortoise monitors will ensure proper implementation of protective measures, record 

and report desert tortoise and tortoise sign observations in accordance with approved protocol, 

report incidents of noncompliance in accordance with the biological opinion and other relevant 

permits and authorizations, and move desert tortoises from harm’s way and place these animals 

in adjacent tortoise habitat approximately 300 feet of the limit of disturbance. 

z All construction activities will be confined to the designated work areas. Grubbing of vegetation 

will only be done to the extent necessary for construction and will be limited to areas designated 

for that. Overnight parking and storage of equipment and materials will be limited to previously 

disturbed areas or areas identified in the BLM right‐of‐way grant. 

z All vehicle traffic will be restricted to existing paved roads and the project alignment within the 

permanent or temporary construction area. Disturbance beyond the construction area would be 

prohibited except in emergency situations.

z Construction vehicles within sensitive species habitat will not exceed 15 miles per hour. 

z A litter‐control program will be implemented during construction. The program will include the 

use of covered, raven‐proof trash receptacles, daily removal of trash from work areas to the 

trash receptacles, and proper disposal of trash in a designated solid waste disposal facility. 

Precautions will also be taken to prevent trash from blowing out of construction vehicles. 

z DesertXpress will promptly remove all road‐killed animals with the project construction area 

and the permanent rail alignment to reduce the adverse effects associated with predation of 

desert tortoise by ravens. 

z No pets or firearms will be permitted in the work area. 

z Both pre‐ and post‐construction photographs will be taken to document sensitive habitat 

conditions within the limits of project disturbance. 

z During construction, DesertXpress will perform weekly inspections and weed removal/control 

during the growing season of all construction areas, rail alignment and facilities. Following the 

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ICF 06334.06

completion of construction activities, from March through August, DesertXpress will continue 

monitoring and removal monthly during the first 2 years of operation and quarterly for the life 

of the facility.  Weed removal and control will consist of physical control methods (e.g., hand 

pulling, hoeing, etc.) or herbicide application. Application of herbicides used in weed treatment 

will be in accordance with BLM approval.  

Desert Tortoise

Fencing and Clearance Surveys

To ensure the clearance of all desert tortoises from all potential habitat areas, USFWS authorized 

tortoise biologists will conduct clearance surveys as required by the USFWS. 

Desert tortoise relocation from the project area will include: 

1. The installation of temporary desert tortoise fencing around the perimeter prior to the 

commencement of on‐site construction.  Installation of the fencing will be monitored by a 

qualified biologist to ensure that desert tortoises are not killed or injured during this activity.  

Temporary desert tortoise fencing will be installed in areas of construction that are beyond the 

perimeter of the right‐of‐way or in areas where construction staging will occur.  Desert tortoise 

guards will be installed at construction area entry points and permanent rail alignment 

maintenance access points. After installation, the fence will be regularly inspected to ensure its 

integrity.  The project proponent will ensure that cross‐country travel for construction purposes 

outside of the areas of desert tortoise fencing is prohibited. 

2. Only biologists authorized by the USFWS will handle desert tortoises and will follow the 

guidelines established by the Desert Tortoise Council 

(http://www.fws.gov/ventura/speciesinfo/protocols_guidelines/).  Desert tortoises found 

within the project area will be removed to undisturbed suitable habitat beyond the construction 

site and relocated within their own territory, where they may be familiar with alternate 

burrows.  If no burrows are available, artificial burrows will be created following the Desert 

Tortoise Council’s guidelines. 

3. After installation of the temporary fencing, the entire project will be surveyed for desert 

tortoises by a qualified biologist.  Following the procedures and precautions outlined in the 

Desert Tortoise Council’s guidelines, all desert tortoise pallets and burrows within the survey 

areas will be examined and excavated by hand, either by or under the direct supervision of an 

authorized biologist, and collapsed to prevent re‐entry. 

4. A qualified biologist(s) will be present during all initial top soil removal, blading, or grading 

activities within the project area.  During project implementation, all workers will inform the 

qualified biologist if a desert tortoise is found within or near project areas.  All work in the 

vicinity of the desert tortoise, which could injure or kill the animal, will cease and it will be 

observed until it is moved from harm’s way by the authorized biologist. 

5. Workers will inspect for desert tortoises under vehicles and equipment before such equipment 

is moved.  If a desert tortoise is present, the worker will wait for it to move from under the 

vehicle or the authorized biologist will be contacted to remove it. 

DesertXpress will replace any previously installed permanent desert tortoise exclusionary fencing 

along I‐15 that is removed during project construction.  

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Biological Assessment for the DesertXpress Project 19 December 2010

ICF 06334.06

Install Culverts under Railroad Tracks

The project proponent will install culverts under the proposed railroad line that match existing I‐15 

or UPRR culverts. Where the project deviates from existing transportation facilities, the project 

proponent will install culverts at natural drainage features and at regular intervals to allow for 

wildlife passage, including desert tortoises to pass under the proposed rail grade. The culverts 

would be designed through coordination with USFWS, BLM, CDFG, and NDOT, to ensure the meet 

agency wildlife standards. The construction and operation of the proposed action would not result 

in loss of desert tortoise habitat or degradation of habitat value downstream from the project 

alignment. 

Minimization measures for potential impacts to the downstream habitat from Segment 4C are 

shown on Figures 1 and 2 in Appendix D.  These minimization measures include the use of tunnels, 

aerial crossing structures, at grade overcrossing structures, and culverts.  At a minimum all 

ephemeral drainages equal to or greater than 4 feet wide are being avoided by these types of 

structures.  Where tunnels and aerial crossing structures are used drainages less than 4 feet in width 

are also being avoided.  If support piles or piers are necessary to support over crossing structures 

these structures will be located outside of the drainage being over crossed. Biological monitors will 

be present during construction to insure that impacts to drainages are avoided according to plan or 

where an impact is unavoidable the impact is minimized and the natural substrate of the ephemeral 

drainage that has been disturbed is reestablished to original grade and with natural substrate 

materials within the drainage channel.  In addition to the ephemeral drainages over crossed, 

ephemeral drainages established (created) or re‐established as part of the project’s compensatory 

mitigation for replacement of impacted waters of the U.S. or State will be monitored by an agency 

approved biologist for a minimum of 5‐years to ensure that agency approved performance 

standards are met. 

All fill material excavated from the proposed tunnels would be used in the permanent rail bed or 

exported off‐site to an appropriate landfill.  No desert tortoise habitat outside of the construction 

area is expected to be disturbed as a result of constructing these facilities. 

Topsoil Removal and Stockpile

The construction area topsoil would be removed and stockpiled prior to initiating construction and 

replaced within areas of temporary disturbance once construction is complete.  A vegetation and 

topsoil removal and restoration plan would be developed and implemented to reduce impacts on 

biological resources. 

Install of Erosion Control Measures

The installation and maintenance of rice wattles, straw wattles and silt fencing along the temporary 

construction area will prevent the sediment from being transported off of the right‐of‐way during 

construction.  Permanent stabilization measures will be deployed upon completion of construction 

along washes and in other areas of potential erosion. 

Compensate for the Loss of Desert Tortoise Habitat in California

The project proponent will provide compensation for the disturbance of desert tortoise habitat 

(Table 8). Compensation ratios for the disturbance of habitat within California will be: 

z 5:1 for impacts on suitable habitat located within Desert Wildlife Management Areas (DWMAs); 

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Biological Assessment for the DesertXpress Project 20 December 2010

ICF 06334.06

z 1:1 for impacts on suitable habitat located outside DWMAs; and 

z 0.5:1 for impacts on disturbed non‐urban habitat. 

Table 8. Compensatory Mitigation for Impacts to Desert Tortoise Habitat in California

Classification Acreage Ratio Compensatory Acreage

DWMA  1,339.34  5:1  6,696.70 

Natural Vegetation 

Outside DWMA 

3,263.58  1:1  3,263.58 

Ruderal Vegetation  14.68  0.5:1  7.34 

Suitable habitat is defined as having biological and physical characteristics to support desert 

tortoise and desert tortoise populations and having a reasonable potential for tortoise to occur. 

Suitable habitat that occurs in patches that are too small to support desert tortoise or lack adequate 

connectivity to larger habitat patches are not considered suitable habitat. 

These mitigation requirements for the disturbance of desert tortoise habitat are based on a formula 

presented in the West Mojave Plan (Bureau of Land Management 2005: 2‐36) and a telephone 

conversation between William Kohn and Stephanie Meyers of ICF Jones & Stokes and Lorenzo 

Encinas, a natural resource specialist with the Bureau of Land Management Barstow field office, on 

November 10, 2008. For the purposes of this project, changes to the compensation formula must be 

reviewed and approved by the BLM. The compensation could be used by the BLM for: 

• installation of desert tortoise exclusion fencing; 

• desert tortoise habitat restoration, including revegetation and removal of exotic plant 

species within the Superior‐Cronese, Shadow Valley, and Ivanpah Valley DWMAs; 

•  purchase desert tortoise habitat within the Western Recovery Unit or the Eastern Recovery 

Unit; and, 

• Contribute funds to a USFWS approved common raven regional management account. 

Compensate for the Loss of Desert Tortoise Habitat in Nevada

For project‐related loss of habitat in Nevada, the project proponent will follow the mitigation 

measures outlined by the Nevada USFWS Ecological Offices for the protection of desert tortoises. In 

accordance with the USFWS guidance, mitigation fees for disturbance to Mojave Desert tortoise 

habitat on BLM‐administered public lands in Nevada will be paid by the project proponent.  

The compensatory mitigation for the temporary and permanent disturbance of 1,053.19 acres of 

suitable desert tortoise habitat in Nevada would be based on the appropriate acreage fee at the time 

of the project begins construction in Nevada. 

Conclusions and Determination

The following section summarizes the effects of the proposed action on federally listed species and 

the proposed compensatory mitigation acreages based on the identified effects. 

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Biological Assessment for the DesertXpress Project 21 December 2010

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Desert Tortoise

In California, the proposed action would directly affect acres of suitable habitat for desert tortoise. 

Direct effects on habitat for desert tortoises would be compensated at ratios of 5:1, 1:1, or 0.5:1, for 

impacts to DWMAs, natural habitat outside of DWMAs, and for disturbed non‐developed habitat 

respectively (Table 8). In Nevada, the proposed action would temporarily affect 812.61 acres and 

permanently affect 240.58 acres of suitable desert tortoise habitat. 

Because of the effects on suitable habitat and the potential mortality of desert tortoises, the 

proposed action may effect and is likely to adversely affect desert tortoises. The proposed action may

effect and is likely to adversely affect designated critical habitat for desert tortoise.  

Direct effects on desert tortoises will be minimized and compensated through the implementation of 

Conservation Measures described above in the “Adopted Conservation Measures” section. 

The Applicant is proposing to develop the detailed project plans through the design build process.  

The design build process will develop detailed engineering design after the Record of Decision has 

been signed.  Prior to any surface‐disturbing construction activity, the Applicant would develop 

detailed engineering design by project segment. During this process, the Applicant may reduce the 

size of the project construction impact and therefore reduce the amount of impact to suitable desert 

tortoise habitat.  The Applicant proposes to delay payment of the desert tortoise mitigation fees 

until after a project segment has been designed.  Payment of desert tortoise mitigation fees would be 

submitted for each segment once the final design has been completed and the exact area of 

construction impacts has been determined. 

References

Brooks, M. L. and T. C. Escue. 2002. Alien annual plants and wildfire in desert tortoise habitat: Status, 

ecological effects, and management. Chelonian Conservation and Biology 4:330‐340. 

Bureau of Land Management. 2002. Northern and Eastern Mojave Desert Management Plan

Amendment to the California Desert Conservation Area Plan and Final Environmental Impact

Statement. 

Bureau of Land Management. 2005. Final Environmental Impact Report and Statement for the West

Mojave Plan. Moreno Valley, California. Bureau of Land Management, California Desert District.  

Bureau of Transportation Statistics. 2007. U.S. Air Carrier Traffic Statistics. Available: 

<http://www.bts.gov/xml/air_traffic/src/datadisp.xml>. Accessed April 2007. 

California Department of Fish and Game. 2005. Status of Rare, Threatened, and Endangered Plants

and Animals of California 2000­2004. Sacramento, California. California Department of Fish and 

Game.  

California Department of Fish and Game. 2010. CDFG California Natural Diversity Data Base.  

California Department of Transportation, Federal Highway Administration, and County of San 

Bernardino. 2001. Initial Study/Environmental Assessment, Victorville to Barstow, Add 

Southbound Mixed Flow Lane. May. 

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Biological Assessment for the DesertXpress Project 22 December 2010

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Corbitt‐Dipierro, Cathleen. 2008. Investigating Wildfires: Part One. Available: 

<http://www.interfire.org/features/wildfires.asp>. Accessed: November 20, 2008. 

DMJM Harris/AECOM, 2008. Draft Final Report Traffic Impact Analysis, DesertXpress. Appendix E. 

Germano, D. J. 1992. Longevity and age‐size relationships of populations of desert tortoises. Copeia

1992:367‐374. 

Germano, D. J. 1994. Growth and age at maturity of North American tortoises in relation to regional 

climates. Canadian Journal of Zoology 72:918‐931. 

Korve Engineering. 2006. 

Morafka, D. J., K. H. Berry, and E. K. Spangenberg. 1997. Predator­proof field exclosures for enhancing

hatching success and survivorship of juvenile tortoises: a critical evaluation. Pages 147‐165 in (J. 

Van Abemma, ed.) Proceedings: Conservation, Restoration, and Management of Tortoises and 

Turtles ‐ An International Conference. New York. New York Turtle and Tortoise Club,  

National Center for Statistics Analysis. 2007. Fatality Analysis Reporting System (FARS). Accessed: 

April 2007. 

RECON. 2000. Clark County Multi Species Habitat Conservation Plan. Final. September. Prepared for 

the Clark County Department of Comprehensive Planning and the U.S. Fish and Wildlife Service. 

Turner, F. B., K. H. Berry, D. C. Randall, and G. C. White. 1987. Population ecology of the desert tortoise

at Goffs, California, in 1983­1986. Annual report to Southern California Edison Company, 

Rosemead, California. 

URS. 2005. Desert Xpress Updated Ridership and Revenue Study. December. New York, NY. 

U.S. Department of the Army. 2005. Supplemental Final Environmental Impact Statement (EIS) for 

the Proposed Addition of Maneuver Training Land at Fort Irwin, California. 

U.S. Fish and Wildlife Service. 1994. Desert Tortoise (Mojave Population) Recovery Plan. Portland, 

Oregon. U.S. Fish and Wildlife Service, Region 1.

F-M-26
Appendix A

Project Alignment Overview Maps

F-M-27
Segment 1

Segment 2C #

Victorville Station

Site 3b

Victorville OMSF

Site 2

Victorville Utility Corridor

§ ̈¦15

Corwin

W

a

a

l

e

w

C

o

l

u

s

a

Adelanto

National Trails

Helendale

(/395

§ ̈¦40

58

Helendale

Barstow

Apple Valley

Adelanto

Victorville

Oro

Grande

Lenwood

Mojave 

Fishhook 

Cactus

BNSF

PVTX

Superior-Cronese DWMA

Sheet

1 Biological Resources

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101207_Appndx_A\DXE_Bio_Resources1_20101207_AppndA.mxd BC

Las Vegas

CALIFOR NIA NEVADA

1

2

3

4

5

67

§ ̈¦40

Death Valley NP

Mojave NPRES

Victorville

Desert Express - Biological Assesment

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007

Appendix A

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Ancillary Facility Sites

[NORTH

024

Kilometers

024

Miles

Area of Critical 

Environmental Concern

Desert Wildlife Management

Area (DWMA)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Temporary Construction

Area (TCAs) Site

#0 Autotransformer Site Options

(EMU Option Only)

Electric Utility Corridor

(EMU Option Only)

Project Outside of Transportation

Right-of-Way

F-M-28
Segment 2C

TCA 2C1

#

#

#

Segment 3B

TCA 5

Minneola

Va

l

l

e

y

C

e

n

t

e

r

R

i

v

e

r

s

i

d

e

§ ̈¦15

Camp Rock

Daggett Ye mr o

Calico

Fort Irwin

Irwin

Rd

1st

§ ̈¦15

Hink el y

§ ̈¦40

58

O ld

H ighw

ay

58

§ ̈¦15

Yermo

Barstow

Lenwood

Segment 1

Segment 2C/2A

Black Mountain

Rainbow Basin/

Owl Canyon

Calico Early 

Man Site

wood-willow 

ian forest

0

BNSF

UPPR

USG

Superior-Cronese DWMA

Superior-Cronese DWMA

Desert Express - Biological Assesment

Sheet

Biological Resources

2

Las Vegas

CALIFOR NIA NEVADA

1

2

3

4

5

67

§ ̈¦40

Death Valley NP

Mojave NPRES

Victorville

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101207_Appndx_A\DXE_Bio_Resources2_20101207_AppndA.mxd BC

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007

Appendix A

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Ancillary Facility Sites

[NORTH

024

Kilometers

024

Miles

Area of Critical 

Environmental Concern

Desert Wildlife Management

Area (DWMA)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Temporary Construction

Area (TCAs) Site

#0 Autotransformer Site Options

(EMU Option Only)

Electric Utility Corridor

(EMU Option Only)

Project Outside of Transportation

Right-of-Way

F-M-29
TCA 6

TCA 7

TCE

Minneola

Va

l

l

e

y

C

e

n

t

e

r

R

i

v

e

rs

i

d

eHarvard

Yermo

Afton

§ ̈¦15

Rasor

Rd

Superior-Cronese DWMA

Superior-Cronese DWMA

Segments 3B

1

2

3

4

5

67

§ ̈¦40

Death Valley NP

Mojave NPRES

Victorville

Las Vegas

C ALIFORNIA NEVADA

Desert Express - Biological Assesment

Sheet

3 Biological Resources

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101207_Appndx_A\DXE_Bio_Resources3_20101207_AppndA.mxd BC

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007

Appendix A

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Ancillary Facility Sites

[NORTH

024

Kilometers

024

Miles

Area of Critical 

Environmental Concern

Desert Wildlife Management

Area (DWMA)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Temporary Construction

Area (TCAs) Site

#0 Autotransformer Site Options

(EMU Option Only)

Electric Utility Corridor

(EMU Option Only)

Project Outside of Transportation

Right-of-Way

F-M-30
Mojave National Preserve

Baker MOW

Baker Utility Corridor

TCA 8

TCA 9

§ ̈¦15

127

K

e

l

b

a

k

e

r

Rasor

Rd

Zzyzx Rd

Baker

Halloran

Springs

Segment 3B

Mesquite bosque

Mesquite bosque

0

-1

Shadow Valley DWMA

1

2

3

4

5

67

§ ̈¦40

Death Valley NP

Mojave NPRES

Victorville

CALIFORNIA NEVADA

Las Vegas

Sheet

4 Biological Resources Desert Express - Biological Assesment

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101207_Appndx_A\DXE_Bio_Resources4_20101207_AppndA.mxd BC

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007

Appendix A

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Ancillary Facility Sites

[NORTH

024

Kilometers

024

Miles

Area of Critical 

Environmental Concern

Desert Wildlife Management

Area (DWMA)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Temporary Construction

Area (TCAs) Site

#0 Autotransformer Site Options

(EMU Option Only)

Electric Utility Corridor

(EMU Option Only)

Project Outside of Transportation

Right-of-Way

F-M-31
Mojave National Preserve

NEVADA

CALIFORNIA

Ivanpah

Lake (Dry)

§ ̈¦15

Mojave National

Preserve

TCA 4C1

TCA 4C3

#

Segment 3B

TCA 4C5

TCA 4C2

Clark Mountain

Segment 4C

TCA 10

TCA 4C4

Morning Star Mine

Nipt

o

n

Cima

Kingston

Primm

Mountain

Pass

Halloran

Springs

Clark Mountain

Halloran 

Wash

Mountain Pass 

Dinosaur Trackway

e bosque

woodland

0

-1

Shadow Valley DWMA

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101207_Appndx_A\DXE_Bio_Resources5_20101207_AppndA.mxd BC

1

2

3

4

5

6

7

§ ̈¦40

Death Valley NP

Mojave NPRES

Victorville

CALIFOR NIA N EVADA

Las Vegas

Sheet

5 Biological Resources Desert Express - Biological Assesment

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007

Appendix A

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Ancillary Facility Sites

[NORTH

024

Kilometers

024

Miles

Area of Critical 

Environmental Concern

Desert Wildlife Management

Area (DWMA)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Temporary Construction

Area (TCAs) Site

#0 Autotransformer Site Options

(EMU Option Only)

Electric Utility Corridor

(EMU Option Only)

Project Outside of Transportation

Right-of-Way

F-M-32
NEVADA

CALIFORNIA

§ ̈¦15

Segments 6C Central A & Central B Segments 6A & 6B Southern, Central A, & Central B

Segment 6

Large-Scale Translocation Site (Desert Tortoise)

#

#

Segment 5B

Segment 4C

#

TCA 4C4

TCE

TCA 13

Kingst on

Sandy Valley

Primm

Jean

Sloan Road MSF

Piute-ElDorado Valley

Not ACEC

Sloan Rock

Bird Springs

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101207_Appndx_A\DXE_Bio_Resources6_20101207_AppndA.mxd BC

1

2

3

4

5

6

7

§ ̈¦40

Death Valley NP

Mojave NPRES

Victorville

C ALIFORNIA

NEVADA

Las Vegas

Sheet

6 Biological Resources Desert Express - Biological Assesment

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007

Appendix A

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Ancillary Facility Sites

[

NORTH

0 2 4

Kilometers

0 2 4

Miles

Area of Critical 

Environmental Concern

Desert Wildlife Management

Area (DWMA)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Temporary Construction

Area (TCAs) Site

#0 Autotransformer Site Options

(EMU Option Only)

Electric Utility Corridor

(EMU Option Only)

Project Outside of Transportation

Right-of-Way

F-M-33
#0

#0§ ̈¦15

UPPR

TCA 22

Las Vegas

Central Station B

Frias Substation

Wigwam Avenue

MSF Option 2

Segment 6 #

#

Segment 5B

Frias Utility Corridor Frias Utility Corridor

Rainbow Gardens

River Mountains

Arden

Arden/Desert Tortoise CC

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101207_Appndx_A\DXE_Bio_Resources7_20101207_AppndA.mxd BC

1

2

3

4

5

67

§ ̈¦40

Death Valley NP

Mojave NPRES

Victorville

Las Vegas

C ALIFORNIA NEVADA

Sheet

7 Biological Resources Desert Express - Biological Assesment

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007

Appendix A

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Ancillary Facility Sites

[NORTH

024

Kilometers

024

Miles

Area of Critical 

Environmental Concern

Desert Wildlife Management

Area (DWMA)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Temporary Construction

Area (TCAs) Site

#0 Autotransformer Site Options

(EMU Option Only)

Electric Utility Corridor

(EMU Option Only)

Project Outside of Transportation

Right-of-Way

F-M-34
Appendix B

Detailed Project Alignment Impact Maps

F-M-35
Stoddard Wells Rd

.

National Trails Hwy.

A

i

r

E

x

py.

Victorville

Utility Corridor

SHEET

1

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resources_20101207.mxd BC (12-08-10)

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-36
§ ̈¦15

Stoddard Wells Rd

.

Victorville

Utility Corridor

SHEET

2

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resources_20101207.mxd BC (12-08-10)

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-37
§ ̈¦15

Victorville OMSF

Site 2

Victorville

Utility Corridor

SHEET

3

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resources_20101207.mxd BC (12-08-10)

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-38
§ ̈¦15

Dale

Evans

Pky.

Victorville OMSF

Site 2

Victorville Station

Site 3b

Segment 1

SHEET

4

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-39
§ ̈¦15

Victorville Station

Site 3b

Segment 1

SHEET

5

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-40
§ ̈¦15

Segment 1

SHEET

6

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-41
§ ̈¦15

Sorrel

Trail

Autotransformer

Site-2

Segment 1

SHEET

7

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-42
§ ̈¦15 Segment 1

SHEET

8

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-43
§ ̈¦15Stoddard Mountain Rd. Segment 1

SHEET

9

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-44
§ ̈¦15

Segment 1

SHEET

10

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-45
§ ̈¦15

Segment 1

SHEET

11

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-46
Autotransformer

Site-3

Outlet

Ce

nte

r

D

r.

§ ̈¦15 Segment 1

SHEET

12

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-47
│Segment 2c

§ ̈¦15

Lenwood

Segment 1

SHEET

13

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFORNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-48
│

Segment 2c

TCA 2C1

§ ̈¦15 UV58

Lenwood Rd.

Lenwood

Segment 1

Segment 2c

SHEET

14

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-49
TCA 2C1

§ ̈¦15

L St.

W

Main

St

.

UV58

Segment 2c

SHEET

15

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-50
§ ̈¦15

§ ̈¦15

§ ̈¦40

Barstow Rd.

Barstow

Segment 2c

SHEET

16

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-51
Autotransformer

Site-4

UV58

§ ̈¦15

Superior-Cronese DWMA

Segment 2c

SHEET

17

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-52
§ ̈¦15

│

Fort Irwin Rd

.

Superior-Cronese DWMA

Segment 2c

Segment 2c/2a

SHEET

18

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-53
§ ̈¦15

Ghost Town Rd.

Fort Irwin Rd

.

Fort Irwin Rd

.

Superior-Cronese DWMA Segment 2c/2a

SHEET

19

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resources_20101207.mxd BC (12-08-10)

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-54
§ ̈¦15 Calico Rd.

Segment 2c/2a

SHEET

20

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resources_20101207.mxd BC (12-08-10)

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-55
TCA 5

Yermo

Rd

.

§ ̈¦15

Autotransformer

Site-5a

Segment 2c/2a

SHEET

21

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-56
§ ̈¦15

Yermo

Rd

.

Minneola Rd.

Superior-Cronese DWMA

Segment 2c/2a

Segment 3b

SHEET

22

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-57
Yermo

Rd

.

§ ̈¦15

Superior-Cronese DWMA

Segment 3b

SHEET

23

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-58
15

Yermo

R

§ ̈¦

d

.

15

Superior-Cronese DWMA

Segment 3b

SHEET

24

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-59
15

§ ̈¦15

Yermo

Rd

.

Superior-Cronese DWMA

Segment 3b

SHEET

25

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-60
§ ̈¦15

Yermo

Rd

.

Autotransformer

Site-6

Superior-Cronese DWMA

Segment 3b

SHEET

26

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-61
Yermo

§ ̈¦15

Manix ACEC

Superior-Cronese DWMA

Segment 3b

SHEET

27

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-62
TCA 6

§ ̈¦15

Superior-Cronese DWMASegment 3b

SHEET

28

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-63
§ ̈¦15

Superior-Cronese DWMA

Segment 3b

SHEET

29

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-64
§ ̈¦15

Superior-Cronese DWMA

Segment 3b

SHEET

30

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-65
Afton Canyon Rd.

§ ̈¦15

Autotransformer

Site-7

Superior-Cronese DWMA

Segment 3b

SHEET

31

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-66
§ ̈¦15

Superior-Cronese DWMA

Segment 3b

SHEET

32

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-67
§ ̈¦15

Superior-Cronese DWMA

Segment 3b

SHEET

33

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-68
§ ̈¦15

Cronese Basin ACEC

Superior-Cronese

DWMA

Segment 3b

SHEET

34

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-69
TCA 7

§ ̈¦15

Autotransformer

Site-8

Cronese Basin ACEC

Segment 3b

SHEET

35

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-70
§ ̈¦15

Segment 3b

SHEET

36

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-71
Rasor

Rd§ ̈¦15 Segment 3b

SHEET

37

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-72
§ ̈¦15 Segment 3b

SHEET

38

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-73
§ ̈¦15

Autotransformer

Site-9

Segment 3b

Mojave National Preserve

SHEET

39

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-74
§ ̈¦15

Segment 3b

Mojave National Preserve

SHEET

40

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-75
§ ̈¦15

Segment 3b

Mojave National Preserve

SHEET

41

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-76
TCA 8

Kelbaker Rd.

Baker Blvd

. § ̈¦15

Segment 3b

Mojave National Preserve

SHEET

42

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-77
TCA 9

Kelbaker Rd.

UV127

Baker Blvd

.

Baker Blvd

.

§ ̈¦15

Baker

Baker MOW

Facility Site

Baker

Utility

Corridor Segment 3b

Mojave National Preserve

SHEET

43

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-78
§ ̈¦15 Segment 3b

Mojave National Preserve

SHEET

44

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-79
§ ̈¦15

Autotransformer

Site-10 Segment 3b

Mojave National Preserve

SHEET

45

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-80
§ ̈¦15

Segment 3b

Mojave National Preserve

SHEET

46

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-81
§ ̈¦15

Shadow Valley DWMA

Segment 3b

Mojave National Preserve

SHEET

47

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-82
§ ̈¦15

Halloran Springs Rd.

Halloran

Springs

Halloran Wash ACEC

Shadow Valley DWMA

Segment 3b

Mojave National Preserve

SHEET

48

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-83
§ ̈¦15

Halloran Wash ACEC

Shadow

Valley

DWMA

Segment 3b

Mojave National Preserve

SHEET

49

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-84
§ ̈¦15

Halloran Summit Rd.

Autotransformer

Site-11

Shadow Valley DWMASegment 3b

Mojave National Preserve

SHEET

50

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-85
§ ̈¦15

Shadow Valley DWMA Segment 3b

Mojave National Preserve

SHEET

51

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-86
§ ̈¦15

Shadow Valley DWMA

Segment 3b

Mojave National Preserve

SHEET

52

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-87
TCA 10

§ ̈¦15

Cima Rd.

Shadow Valley DWMA

Segment 3b

Mojave National Preserve

SHEET

53

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-88
§ ̈¦15

Shadow Valley DWMA

Segment 3b

Mojave National Preserve

SHEET

54

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-89
§ ̈¦15

Autotransformer

Site-12 Segment 3B

Shadow Valley DWMA

Segment 3b

Mojave National Preserve

SHEET

55

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-90
TCA 4C1

§ ̈¦15

Clark Mountain Rd.

Segment 3b

Mojave National Preserve

SHEET

56

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resources_20101207.mxd BC (12-08-10)

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFORNIA NEVAD A

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-91
│

TCA 4C1

§ ̈¦15

Cla

r

k

M

o

u

n

t

ain

R

d

.

Baily Rd.

Mountain

Pass

Segment 3b

Segment 4c

SHEET

57

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resources_20101207.mxd BC (12-08-10)

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFORNIA NEVAD A

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-92
TCA 4C2

TCA 4C3

Segment 4c

SHEET

58

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resources_20101207.mxd BC (12-08-10)

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFORNIA NEVAD A

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-93
Segment 4c

Mojave National Preserve

SHEET

59

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-94
Segment 4c

Mojave National Preserve

SHEET

60

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-95
TCA 4C4

Segment 4c

Mojave National Preserve

SHEET

61

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resources_20101207.mxd BC (12-08-10)

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFORNIA NEVAD A

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-96
TCA 4C4

Autotransformer

Site-13

Segment 4c

Mojave

National

Preserve

SHEET

62

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resources_20101207.mxd BC (12-08-10)

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFORNIA NEVAD A

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-97
Segment 4c

SHEET

63

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-98
Segment 4c

SHEET

64

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-99
CALIFORNIA

TCA 4C5

NEVADA

E

Primm

Blvd

.

§ ̈¦15

Primm

Autotransformer

Site-14

Segment 4c

SHEET

65

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resources_20101207.mxd BC (12-08-10)

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFORNIA NEVAD A

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-100
§ ̈¦15Segment 4c

SHEET

66

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-101
│ § ̈¦15

UV604

Segment 4c

Segment 5b

SHEET

67

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-102
§ ̈¦15

UV604

Segment 5b

SHEET

68

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-103
§ ̈¦15

Segment 5b

SHEET

69

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-104
§ ̈¦15 Segment 5b

SHEET

70

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-105
§ ̈¦15

Segment 5b

SHEET

71

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-106
§ ̈¦15

UV161

Las Vegas Blvd. S

Jean

Autotransformer

Site-15

Segment 5b

SHEET

72

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-107
§ ̈¦15

Las Vegas Blvd. S

Segment 5b

SHEET

73

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-108
TCA 13

Las Vegas Blvd

. S § ̈¦15

Segment 5b

SHEET

74

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-109
Las Vegas Blvd

. S

§ ̈¦15

Las Vegas 

Segment 5b

SHEET

75

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-110
Las Vegas Blvd

. S

§ ̈¦15

Segment 5b

SHEET

76

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-111
§ ̈¦15

Las Vegas Blvd. S

Segment 5b

SHEET

77

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-112
│

Las Vegas Blvd. S

§ ̈¦15

Segment 5b

Segment 6

SHEET

78

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resou rces_20101207.mxd BC (12-08-10 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-113
Sloan

Rd.

Las Vegas Blvd. S

Las Vegas Blvd. S

§ ̈¦15

Autotransformer

Site-16b

Segment 6

SHEET

79

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resources_20101207.mxd BC (12-08-10)

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-114
§ ̈¦15

Las Vegas Blvd. S UV146

St

.

Rose

Pkwy.

Southern Highlands Pkwy.

Segment 6

SHEET

80

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resources_20101207.mxd BC (12-08-10)

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-115
§ ̈¦15

Las Vegas B vl d. S

Segment 6

SHEET

81

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resources_20101207.mxd BC (12-08-10)

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFORNIA NEVAD A

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

No desert tortoise habitat on this sheet.

F-M-116
§ ̈¦15

Las Vegas B vl d. S

Autotransformer

Site-17

Frias Utlility

Corridor

Segment 6

SHEET

82

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resources_20101207.mxd BC (12-08-10)

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

No desert tortoise habitat on this sheet.

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-117
Las Vegas Blvd. S

§ ̈¦15

Wigwam Avenue

MSF Option 2

Blue Diamond Rd

.

Segment 6

SHEET

83

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resources_20101207.mxd BC (12-08-10)

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

No desert tortoise habitat on this sheet.

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-118
§ ̈¦15

Las Vegas B vl d. S

UV160

Blue

Diamond Rd

.

Segment 6

SHEET

84

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resources_20101207.mxd BC (12-08-10)

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

No desert tortoise habitat on this sheet.

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-119
§ ̈¦15

Las Vegas B vl d. S

§ ̈¦215

Segment 6

SHEET

85

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resources_20101207.mxd BC (12-08-10)

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

No desert tortoise habitat on this sheet.

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-120
Las Vegas Blvd. S

§ ̈¦15

T

r

o

p

i

c

a

n

a

Av

e

.

Segment 6

SHEET

86

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resources_20101207.mxd BC (12-08-10)

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

No desert tortoise habitat on this sheet.

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-121
T

r

o

p

i

c

a

n

a

Av

e

.

§ ̈¦15

Las Vegas Blvd. S

Las Vegas

Central Station B

F

l

a

m

i

n

g

o

R

d

.

TCA 22

Las Vegas Blvd.

Segment 6

SHEET

87

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101201_BA\DXE_Bio_Resources_20101207.mxd BC (12-08-10)

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Habitat (ICF International 2010). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2c

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Ancillary Facility Sites

Desert Wildlife Management

Area (DWMA)

Temporary Construction

Area (TCAs) Site

Electric Utility Corridor

(EMU Option Only)

Area of Critical 

Environmental Concern

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat.

Desert Tortoise Habitat

Permanent Habitat

Temporary Habitat

Autotransformer Site Options

(EMU Option Only)

DesertXpress Alignment

Station/Substation Site

Maintenance Facility

Desert Tortoise

Critical Habitat

No desert tortoise habitat on this sheet.

Biological Resources

Appendix B

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

F-M-122
Appendix C

Location of Desert Tortoise Sign from Limited Survey

Along the Proposed Action  

F-M-123
!(!(

!(

§ ̈¦15

Dale

Evans

Pky.

§ ̈¦15

Victorville OMSF

Site 2

Victorville Station

Site 3b

14-3, (Class-5)

15-2, (Class-6)

14-2, (Class-5)

SHEET

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101209_Appndx_C\DXE_Bio_Resources12k_20101209_AppndC.mxd EL (12/9/2010)

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Survey Data (ICF International 2007). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2a

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Survey Record

Desert Tortoise Survey Results

(2007)

Appendix C

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat. !(!(!( Desert Tortoise Burrow

Desert Tortoise Carcass

Desert Tortoise Pallet

Ancillary Facility Sites

Temporary Construction

Area (TCAs) Site

Autotransformer Site Options

(EMU Option Only)

Station/Substation Site

Maintenance Facility

DesertXpress Alignment

Electric Utility Corridor

(EMU Option Only) SHEET

01

F-M-124
!(

§ ̈¦15

16-1, (Class-4) Segment 1

SHEET

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101209_Appndx_C\DXE_Bio_Resou rces12k_20101209_AppndC.mxd EL (12/9/2010 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Survey Data (ICF International 2007). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2a

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Survey Record

Desert Tortoise Survey Results

(2007)

Appendix C

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat. !(!(!( Desert Tortoise Burrow

Desert Tortoise Carcass

Desert Tortoise Pallet

Ancillary Facility Sites

Temporary Construction

Area (TCAs) Site

Autotransformer Site Options

(EMU Option Only)

Station/Substation Site

Maintenance Facility

DesertXpress Alignment

Electric Utility Corridor

(EMU Option Only) SHEET

02

F-M-125
!(

!(!(!(

!(!(!(

!(

Stoddard Mountain Rd.

§ ̈¦15

19-1, (Class-1)

19-8, (Class-N/A)

19-3, (Class-1) 19-2, (Class-2)

19-4, (Class-5) 19-5, (Class-5)

19-6, (Class-5)

19-7, (Class-1)

Segment 1

SHEET

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101209_Appndx_C\DXE_Bio_Resou rces12k_20101209_AppndC.mxd EL (12/9/2010 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Survey Data (ICF International 2007). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2a

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Survey Record

Desert Tortoise Survey Results

(2007)

Appendix C

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat. !(!(!( Desert Tortoise Burrow

Desert Tortoise Carcass

Desert Tortoise Pallet

Ancillary Facility Sites

Temporary Construction

Area (TCAs) Site

Autotransformer Site Options

(EMU Option Only)

Station/Substation Site

Maintenance Facility

DesertXpress Alignment

Electric Utility Corridor

(EMU Option Only) SHEET

03

F-M-126
!(

!(

Yermo

Rd

.

§ ̈¦15

§ ̈¦15 Calico Rd.

Autotransformer

Site-5a

31-1, (Class-5) 31-2, (Class-2)

Segment 2c/2a

SHEET

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101209_Appndx_C\DXE_Bio_Resou rces12k_20101209_AppndC.mxd EL (12/9/2010 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Survey Data (ICF International 2007). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2a

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Survey Record

Desert Tortoise Survey Results

(2007)

Appendix C

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat. !(!(!( Desert Tortoise Burrow

Desert Tortoise Carcass

Desert Tortoise Pallet

Ancillary Facility Sites

Temporary Construction

Area (TCAs) Site

Autotransformer Site Options

(EMU Option Only)

Station/Substation Site

Maintenance Facility

DesertXpress Alignment

Electric Utility Corridor

(EMU Option Only) SHEET

04

F-M-127
!(!(!(

!(

!(

!(

§ ̈¦15

§ ̈¦15

Autotransformer

Site-7

40-1, (Class-4)

40-6, (Class-6)

40-2, (Class-4)

40-3, (Class-4)

40-4, (Class-4)

40-5, (Class-3) Segment 3b

SHEET

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101209_Appndx_C\DXE_Bio_Resou rces12k_20101209_AppndC.mxd EL (12/9/2010 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Survey Data (ICF International 2007). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2a

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Survey Record

Desert Tortoise Survey Results

(2007)

Appendix C

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat. !(!(!( Desert Tortoise Burrow

Desert Tortoise Carcass

Desert Tortoise Pallet

Ancillary Facility Sites

Temporary Construction

Area (TCAs) Site

Autotransformer Site Options

(EMU Option Only)

Station/Substation Site

Maintenance Facility

DesertXpress Alignment

Electric Utility Corridor

(EMU Option Only) SHEET

05

F-M-128
!(

Afton Canyon Rd.

§ ̈¦15

42-1, (Class-2)

Segment 3b

SHEET

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101209_Appndx_C\DXE_Bio_Resou rces12k_20101209_AppndC.mxd EL (12/9/2010 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Survey Data (ICF International 2007). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2a

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Survey Record

Desert Tortoise Survey Results

(2007)

Appendix C

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat. !(!(!( Desert Tortoise Burrow

Desert Tortoise Carcass

Desert Tortoise Pallet

Ancillary Facility Sites

Temporary Construction

Area (TCAs) Site

Autotransformer Site Options

(EMU Option Only)

Station/Substation Site

Maintenance Facility

DesertXpress Alignment

Electric Utility Corridor

(EMU Option Only) SHEET

06

F-M-129
!(

§ ̈¦15

46-1, (Class-4)

Segment 3b

SHEET

K:\Projects_1\CirclePoint\06334_06\mapdoc\Bio_Resources\BA\Bio_Resources\2010\20101209_Appndx_C\DXE_Bio_Resou rces12k_20101209_AppndC.mxd EL (12/9/2010 )

US DOI Bureau of Land Management,

Reno Nevada April 2008, DesertXpress 2010, National

Atlas of the United States and the United States

Geological Survey, ESRI 2006. Tele Atlas and ESRI

StreetMap USA 2006, National Agriculture Imagery

Program (NAIP) 2005 & 2006, Air Photo USA April 2007,

Desert Tortoise Survey Data (ICF International 2007). 

Desert Express - Biological Assesment

§ ̈¦40

6

2c/2a

2c

1

4c

5b

3b

Las Vegas CALIFO RNIA NEVADA

Death Valley NP

Mojave NPRES

Victorville

Survey Record

Desert Tortoise Survey Results

(2007)

Appendix C

0 0.2 0.4

Kilometers

0 0.2 0.4

Miles

[NORTH

Note: Undeveloped areas below 5000 feet in

elevation are potential Desert Tortoise habitat. !(!(!( Desert Tortoise Burrow

Desert Tortoise Carcass

Desert Tortoise Pallet

Ancillary Facility Sites

Temporary Construction

Area (TCAs) Site

Autotransformer Site Options

(EMU Option Only)

Station/Substation Site

Maintenance Facility

DesertXpress Alignment

Electric Utility Corridor

(EMU Option Only) SHEET

07

F-M-130
Appendix D

Segment 4C Preliminary Locations for Tunnels, Aerial,

and At‐Grade Crossings

F-M-131
F-M-132
F-M-133
F-M-134
F-M-135