Mesquite-Ivanpah Valley Area, Nevada and California
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Anthropogenic Disturbance and Mojave Desert Tortoise (Gopherus Agassizii) Genetic Connectivity
University of Nevada, Reno Connecting the Plots: Anthropogenic Disturbance and Mojave Desert Tortoise (Gopherus agassizii) Genetic Connectivity A dissertation submitted in partial fulfillment of the requirements for the degree Doctor of Philosophy in Geography By Kirsten Erika Dutcher Dr. Jill S. Heaton, Dissertation Advisor May 2020 THE GRADUATE SCHOOL We recommend that the dissertation prepared under our supervision by KIRSTEN ERIKA DUTCHER entitled Connecting the Plots: Anthropogenic Disturbance and Mojave Desert Tortoise (Gopherus agassizii) Genetic Connectivity be accepted in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Jill S. Heaton, Ph.D. Advisor Kenneth E. Nussear, Ph.D. Committee Member Scott D. Bassett, Ph.D. Committee Member Amy G. Vandergast, Ph.D. Committee Member Marjorie D. Matocq, Ph.D. Graduate School Representative David W. Zeh, Ph.D., Dean Graduate School May, 2020 i ABSTRACT Habitat disturbance impedes connectivity for native populations by altering natural movement patterns, significantly increasing the risk of population decline. The Mojave Desert historically exhibited high ecological connectivity, but human presence has increased recently, as has habitat disturbance. Human land use primarily occurs in Mojave desert tortoise (Gopherus agassizii) habitat posing risks to the federally threatened species, which has declined as a result. As threats intensify, so does the need to protect tortoise habitat and connectivity. Functional corridors require appropriate habitat amounts and population densities, as individuals may need time to achieve connectivity and find mates. Developments in tortoise habitat have not been well studied, and understanding the relationship between barriers, corridors, population density, and gene flow is an important step towards species recovery. -
28 September 2020 Desert Tortoise Management Oversight Group
28 September 2020 DESERT TORTOISE RECOVERY IMPLEMENTATION STATUS SUMMARY TABLE OF CONTENTS Desert Tortoise Management Oversight Group Recovery Priorities 1 RIT Projects in Need of Funding 1 RIT Project Summaries 6 Top Fencing Recommendations 14 Funded RIT Projects 16 DESERT TORTOISE MANAGEMENT OVERSIGHT GROUP RECOVERY PRIORITIES ● Restore habitat (incl. route restoration) ● Reduce predator subsidies ● Targeted predator control ● Install and maintain tortoise barrier fencing ● Fire management planning and implementation ● Education (lower priority than on-the-ground actions) RIT PROJECTS IN NEED OF FUNDING Desert tortoise population trends through 2014 are indicated for geographic areas covered by the range-wide monitoring program Project Priority Title Budget # Rangewide RW02 Seed Increases for Desert Tortoise Habitat Restoration in Southern Nevada $140,000 California RIT - Rangewide Mojave Raven Watch - a desert tortoise rangewide human education CA09 $126,500 program Removal of free-roaming burros on BLM managed land in excess of CA41 $2,465,000 authorized population level. Identification of existing culverts and underpasses needing maintenance or CA42 modification to facilitate desert tortoise movement under highways and $48,000 roads. Rd8 Fence I-40 north of Black Ridge, CA, both sides, 5.0 miles TBD Rd11 Fence I-40 near Old Dad Mountains, both sides, 9.4 miles TBD Rd13 Fence I-40 near Kalbaker Rd, 8.1 miles TBD California RIT - Northeast Mojave Workgroup Ivanpah Critical Habitat Unit (see also CA41) -7.4%/year Increase law enforcement patrols for desert tortoise protection in Mojave CA19 $259,000 National Preserve. CA26 Evaluation of raven food subsidy sites near the Mojave National Preserve $82,133 Fenner Critical Habitat Unit (see also CA19, CA26, and CA41) -7.3%/year CA25. -
Mojave National Preserve Management Plan for Developed
Mojave National Preserve—Management Plan for Developed Water Resources CHAPTER 3: AFFECTED ENVIRONMENT Introduction This chapter describes the unique factors that influence water resource management in the Preserve and the resources that could be affected by the implementation of any of the alternatives described in Chapter 2: Alternatives. The resource descriptions provided in this chapter serve as a baseline to compare the potential effects of the management actions proposed in the alternatives. The following resource topics are described in this chapter: • Environmental Setting • Cultural Resources • Water Resources • Wilderness Character • Wildlife Environmental setting and water resources are important for context and are foundational for water resource management, but are not resources that are analyzed for effects. Resource issues that were considered and dismissed from further analysis are listed in Chapter 1: Purpose of and Need for Action and are not discussed further in this EA. A description of the effects of the proposed alternatives on wildlife, cultural resources, and wilderness character is presented in Chapter 4: Environmental Consequences. Environmental Setting The Preserve includes an ecologically diverse yet fragile desert ecosystem consisting of vegetative attributes that are unique to the Mojave Desert, as well as components of the Great Basin and Sonoran Deserts. Topography The topography of the Preserve is characteristic of the mountain and basin physiographic pattern, with tall mountain ranges separated by corresponding valleys filled with alluvial sediments. Primary mountain ranges in the Preserve, from west to east, include the Granite, Kelso, Providence, Clark, New York, and Piute Mountains. Major alluvial valleys include Soda Lake (dry lake bed), Shadow Valley, Ivanpah Valley, Lanfair Valley, and Fenner Valley. -
Mojave National Preserve Management Plan for Developed Water Sources
to Las Vegas to Las Vegas Kin Primm gsto E n S W E H G T G a I sh N G N A M Wilderness H R A L Y N R A I (! (!A A N Clark Mountain )" H #T R D N (! (! G # G (! U (! N R U U IO ") N A 95 O (! Y E Yates Well P O S (! A x N C C I L c M (! F IC G e U H IVANPAH R L l K A E Mojave National Preserve s IL L i R R U o # 15 O A (! LAKE (! C A r A Water Resources Management Plan and Environmental Assessment D M L (dry) c D C i n ash M 164 O e LL W HI n Searchlight R WK o MOHA at o Nipton W he a Mojave National Preserve boundary W d )" P # Nipton Road I Salton # ### 164 U M ## # National Park Service wilderness E I T Sea G N h E s N E R Y a A A W # R L (! E s L S Spring ng A H V ri C IL ES L L p M N A S 127 ll L L )" CIMA ROAD # Ivanpah Road I u L Small game guzzler B A )" (! A E V # )" V Y S T " Big game guzzler T # ## A N (! S # M (! L )" # (!(! # Halloran Springs #Morning U N # L (! I # ## (! # Well H E # Star Mine # O h ##(!# A ## s ## W (! )" A Y (! # T a H i # M (! CASTLE ## P l sh (!# Paved road lo a N W # A w W MOUNTAINS N Willow e U )" # P NATIONAL t SILVER A u Spring O i 15 N MONUMENT LAKE # V (! P Unpaved 2-wheel drive road I A (!# # # M (dry) (! # )" Morning Star Mine Road V (! I (! E Cal Nev Ari # L Kessler Unpaved 4-wheel drive road #(!# T # #### Spring K (!## S CIMA R (! (!# Mine Ro (! (! # rt a # A (! ! O # a d Mojave Road 4-wheel drive road #(!#(! ( Y C h DOME (! !( H # s Deer ( (! W (! a E (!(! Spring #(! N (! )" )" P W# (! Keystone Desert wash (! I NEVADA Baker Kelbaker Rd nk (! (! CALIFORNIA a (! (! U T (!(! # (! (! Spring ck -
Piute Valley Groundwater Basin Bulletin 118
Hydrologic Region Colorado River California’s Groundwater Piute Valley Groundwater Basin Bulletin 118 Piute Valley Groundwater Basin • Groundwater Basin Number: 7-45 • County: San Bernardino • Surface Area: 176,000 acres (275 square miles) Basin Boundaries and Hydrology This basin underlies a portion of Piute Valley in eastern San Bernardino County. The Piute Valley, and its underlying groundwater basin, extends into southern Nevada (Jennings 1961; Bishop 1963), but this report considers only the portion that lies within California. The basin is bounded by the nonwater-bearing rocks of the Dead Mountains on the east, of the Piute Range and Homer Mountain on the northwest, of the Piute Mountains on the southwest, and of the Sacramento Mountains on the southeast (Bishop 1963). The valley is drained by Piute Wash to the southeastern part of the valley, where the drainage enters the Needles Valley and flows eastward to the Colorado River. Annual average precipitation ranges from about 4 to 8 inches. Hydrogeologic Information Water Bearing Formations Groundwater in the basin is found in younger and older alluvium. Older alluvium of Pleistocene age consists of fine to coarse sand interbedded with gravel, silt, and clay. Younger alluvium of Holocene age consists of poorly sorted gravel, sand, silt, and clay (DWR 1954). Valley fill extends to at least 1,044 feet in the central part of the basin and 920 feet in the southeastern part of the basin. Wells in the basin yield a maximum of 1,500 gpm. Restrictive Structures A fault in this basin may be a barrier to groundwater flow (DWR 1954). -
South Clark County Land Use Plan
South Clark County Land Use Plan Henderson Mt. Potosi Boulder Spring Mtns City NRA Sloan Red Rock NCA Sloan Canyon Eldorado National Valley Conservation Area Sandy Goodsprings Valley 161 Jean 165 Colorado River Nelson Ivanpah McCullough Range Valley Lake Mead Primm 95 National Recreation Area California Arizona Cottonwood Cove 164 Searchlight Lake Mojave Goodsprings & Sandy Valley Cal-Nev-Ari Citizens Advisory Councils Palm & Searchlight Gardens 163 Town Advisory Board Laughlin Adopted - December 5, 2012 Effective - January 9, 2013 ACKNOWLEDGEMENTS Clark County Board of Commissioners: Mark Silverstein, Department of Aviation Susan Brager, Chair Margie Yatson, Clark County Fire Steve Sisolak, Vice-Chair Department Larry Brown Linda Perri, Clark County School District Tom Collins Lebene Aidam-Ohene, High Impact Projects Chris Giunchigliani Manager Mary Beth Scow Denis Cedarburg, Public Works Lawrence Weekly Kevin Eubanks, Regional Flood Control Julie Chadburn, Water Reclamation District Planning Commission: Kathleen Blakely, Park Planning Vivian Kilarski, Chair Justin Williams, Park Planning Edward Frasier, III, Vice-Chair J. Christopher Dapper Office of County Manager: Greg Esposito Don Burnette, Manager Randy Miller Randall J. Tarr, Assistant Manager Dan Shaw Ed Finger, Assistant Manager Donna Tagliaferri Jeff Wells, Assistant Manager Goodsprings Citizens Advisory Council: Department of Comprehensive Planning: Elizabeth Warren, Chair Nancy Lipski, Director Monica Beisecker, Vice-Chair Jon Wardlaw, Planning Manager Theodore Louis Compton -
Castle Mountain Project San Bernardino County, California, USA NI 43-101 Technical Report
Castle Mountain Project San Bernardino County, California, USA NI 43-101 Technical Report Report Effective Date: Report Authors 23 August 2017 Todd Wakefield SME-RM Don Tschabrun SME-RM Report Filing Date: 25 October 2017 MTS Project Number: 16106 CERTIFICATE OF QUALIFIED PERSON I, Todd Wakefield, SME-RM, am employed as a Principal Geologist with Mine Technical Services Ltd. in Reno, Nevada. This certificate applies to the technical report titled “Castle Mountain Project, San Bernardino County, California, USA, NI 43-101 Technical Report” dated 25 October 2017 (the “technical report”). I am a Registered Member of the Society of Mining, Metallurgy, and Exploration (SME), 4028798RM. I graduated from the University of Redlands with a Bachelors of Science degree in Geology in 1986 and the Colorado School of Mines with a Master of Science degree in Geology in 1989. I have practiced my profession for continuously since 1987. I have been directly involved in gold exploration and mining projects in the United States, and I have been involved in evaluating data quality for scoping, pre-feasibility, and feasibility level studies for properties in the United States. As a result of my experience and qualifications, I am a Qualified Person as defined in National Instrument 43–101 Standards of Disclosure for Mineral Projects (NI 43–101). I visited the Castle Mountain Project on 13 to 16 December 2016. I am responsible for Sections 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, and 27 of the technical report. -
Airborne Radiometric Maps of Mountain Pass, California Purposes Only and Does Not Imply Endorsement by the U.S
U.S. Department of the Interior Scientific Investigations Map 3412–C U.S. Geological Survey 115°35’ 115°30’ 115°25’ 115°35’ 115°30’ 115°25’ INTRODUCTION percent; for eTh, from −0.74 to 180.20 ppm, with a mean of 8.16 ppm; and for eU, from REFERENCES CITED −0.22 to 17.03 ppm, with a mean of 2.03 ppm. Negative concentrations were obtained Geophysical investigations of Mountain Pass, California, were conducted as part of DeWitt, E., Kwak, L.M., and Zartman, R.E., 1987, U-Th-Pb and 40Ar/39Ar dating of the 35°35’ EXPLANATION 35°35’ over water or some alluvial deposits. Verplanck and others (2014) provided a deposit an effort to study regional crustal structures as an aid to understanding the geologic Mountain Pass carbonatite and alkalic igneous rocks, southeastern California: 6a Quaternary alluvium model for carbonatite- and alkaline-intrusion-related REE mineralization, and they framework and mineral resources of the eastern Mojave Desert. The study area encom- Geological Society of America, Abstracts with Programs, v. 19, no. 7, p. 642. Quaternary gravel described some of the geophysical tools used to assess these deposits. These radiogenic 5b passes Mountain Pass, which is host to one of the world’s largest rare earth element International Atomic Energy Agency, 2003, Guidelines for radioelement mapping using Granitic rocks, undivided features are briefly discussed below (from northwest to southeast), and their locations are 5a (REE) carbonatite deposits. The deposit is found along a north-northwest-trending, gamma-ray spectrometry data: International Atomic Energy Agency, Technical Ivanpah Valley labeled on the maps and figure 1 (for example, locs. -
Mineral Resources of the Fort Piute Wilderness Study Area, San Bernardino County, California
Mineral Resources of the Fort Piute Wilderness Study Area, San Bernardino County, California U.S. GEOLOGICAL SURVEY BULLETIN 1713-C Chapter C Mineral Resources of the Fort Piute Wilderness Study Area, San Bernardino County, California By JANE E. NIELSON, JAMES G. FRISKEN, and ROBERT C. JACHENS U.S. Geological Survey JOHN R. McDONNELL, JR. U.S. Bureau of Mines U.S. GEOLOGICAL SURVEY BULLETIN 1713 MINERAL RESOURCES OF WILDERNESS STUDY AREAS: EASTERN CALIFORNIA DESERT CONSERVATION AREA, CALIFORNIA DEPARTMENT OF THE INTERIOR DONALD PAUL MODEL, Secretary U.S. GEOLOGICAL SURVEY Dallas L. Peck, Director UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1987 For sale by the Books and Open-File Reports Section U.S. Geological Survey Federal Center, Box 25425 Denver, CO 80225 Library of Congress Cataloging-in-Publication Data Mineral resources of the Fort Piute Wilderness Study Area, San Bernardino County, California. U.S. Geological Survey Bulletin 1713-C Bibliography Supt. of Docs. No.: I 19.3: 1713-C 1. Mines and mineral resources California Fort Piute Wilderness. 2. Geology California Fort Piute Wilderness. 3. Fort Piute Wilderness (Calif.) I. Nielson, Jane E. II. Series. QE75.B9 No. 1713-C 557.3 s 86-607923 [TN24.C2] [553'.09794'95] STUDIES RELATED TO WILDERNESS Bureau of Land Management Wilderness Study Areas The Federal Land Policy and Management Act (Public law 94-579, October 21, 1976) requires the U.S. Geological Survey and the U.S. Bureau of Mines to conduct mineral surveys on certain areas to determine the mineral values, if any, that may be present. Results must be made available to the public and be submitted to the President and the Congress. -
California Desert Conservation Area Plan Amendment / Final Environmental Impact Statement for Ivanpah Solar Electric Generating System
CALIFORNIA DESERT CONSERVATION AREA PLAN AMENDMENT / FINAL ENVIRONMENTAL IMPACT STATEMENT FOR IVANPAH SOLAR ELECTRIC GENERATING SYSTEM FEIS-10-31 JULY 2010 BLM/CA/ES-2010-010+1793 In Reply Refer To: In reply refer to: 1610-5.G.1.4 2800lCACA-48668 Dear Reader: Enclosed is the proposed California Desert Conservation Area Plan Amendment and Final Environmental Impact Statement (CDCA Plan Amendment/FEIS) for the Ivanpah Solar Electric Generating System (ISEGS) project. The Bureau of Land Management (BLM) prepared the CDCA Plan Amendment/FEIS for the ISEGS project in consultation with cooperating agencies and California State agencies, taking into account public comments received during the National Environmental Policy Act (NEPA) process. The proposed plan amendment adds the Ivanpah Solar Electric Generating System project site to those identified in the current California Desert Conservation Area Plan, as amended, for solar energy production. The decision on the ISEGS project will be to approve, approve with modification, or deny issuance of the rights-of-way grants applied for by Solar Partners I, 11, IV, and VIII. This CDCA Plan Amendment/FEIS for the ISEGS project has been developed in accordance with NEPA and the Federal Land Policy and Management Act of 1976. The CDCA Plan Amendment is based on the Mitigated Ivanpah 3 Alternative which was identified as the Agency Preferred Alternative in the Supplemental Draft Environmental Impact Statement for ISEGS, which was released on April 16,2010. The CDCA Plan Amendment/FEIS contains the proposed plan amendment, a summary of changes made between the DEIS, SDEIS and FEIS for ISEGS, an analysis of the impacts of the proposed decisions, and a summary of the written and oral comments received during the public review periods for the DEIS and for the SDEIS, and responses to comments. -
California's Groundwater Update 2013
California’s Groundwater Update 2013 A Compilation of Enhanced Content for California Water Plan Update 2013 April 2015 State of California Natural Resources Agency Department of Water Resources COLORADO RIVER HYDROLOGIC REGION Table of Contents Contents Chapter 12. Colorado River Hydrologic Region Groundwater Update ................................................. i Introduction ............................................................................................................................................... 1 Findings, Data Gaps, and Recommendations ........................................................................................... 3 Findings ................................................................................................................................................ 3 Groundwater Supply and Development ............................................................................................ 3 Groundwater Use and Aquifer Conditions ........................................................................................ 3 Groundwater Monitoring Efforts ...................................................................................................... 4 Groundwater Management and Conjunctive Management ............................................................... 4 Data Gaps .............................................................................................................................................. 5 Data Collection and Analysis ........................................................................................................... -
Request for Time-Critical Removal Action at Goldome Mill, Mojave
SFUND RECORDS CTR 2162820 ^^..eosr,,^^ S ^^M^V^ -Z. UNITED STATES ENVIRONMENTAL PROTECTION AGENCY % ^SM- " REGION IX \^"*^NOw ^ 75 Hawthorne Street ^^PRo^^^ San Francisco, CA 94105 MEMORANDUM 'JUL 1 1 2008 SUBJECT: Request for a Time-Critical Removal Action at Goldome Mill, Mojave National Preserve, San Bernardino County, California FROM: Craig Benson, On-Scene Coordinator Ertiergency Response Section (SFD-9-2) TO: Daniel Meer, Chief Response, Planning & Assessment Branch (SFD-9) THROUGH: Steve Calanog, Acting Chief ^'^^^^ Emergency Response Section (SFD-9-2) I. PURPOSE The purpose of this Action Memorandum is to obtain approval to spend up to $264,000.00 in direct costs to mitigate threats to human health and the environment posed by uncontrolled hazardous substances (cyanide, ignitable materials, corrosive liquids and solids and metal bearing wastes) present at the Goldome Mill (the "Site"). The Site is located near Ivanpah Road, approximately nine miles west of the Nevada/California state line, in San Bernardino County, California. The proposed removal of hazardous substances would be taken pursuant to Section 104(a)(1) of the Comprehensive Environmental Response, Compensation and Liability Act ("CERCLA"), 42 U.S.C. § 9604(a)(1), and Section 300.415 of the National Oil and Hazardous Substances Pollution Contingency Plan ("NCP"), 40 C.F.R. § 300.415. II. SITE CONDITIONS AND BACKGROUND Site Status: Non-NPL Category of Removal: Time-Critical CERCLIS ID: assignment pending AM approval SITE ID: assignment pending AM approval A, Site Description 1. Physical location The 40-acre Site is situated on patented private land within the Mojave National Preserve on the western slope of the New York Mountains located on the eastern edge of the Ivanpah Valley.