DOCSLIB.ORG

Download REPORT TITLE: Geologic Mapping and Data

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Download REPORT TITLE: Geologic Mapping and Data Page 2 of 61 GEO. DCPP.TR.14.01, Rev. 0 RECORD OF REVISIONS Rev. No. Reason for Revision Revision Date Initial Release. This work was defined and tracked under SAPN 0 6/30/2014 50470704. Page 3 of 61 GEO. DCPP.TR.14.01, Rev. 0 TABLE OF CONTENTS Page Signatories ........................................................................................................................ 1 Record of Revisions .......................................................................................................... 2 List of Tables, Figures, Plates, Appendices, and Attachments ......................................... 6 Abbreviations and Acronyms ............................................................................................ 8 1.0 INTRODUCTION .................................................................................................... 10 1.1 Purpose ......................................................................................................... 10 1.2 Intended Use of the Results .......................................................................... 10 1.3 Scope of Work ............................................................................................... 10 1.4 Project QA Program, Participating Organizations, and Responsibilities........ 11 2.0 ASSUMPTIONS ..................................................................................................... 12 3.0 DATA ...................................................................................................................... 13 3.1 Previously Collected Geologic and Geospatial Map Data ............................. 13 3.1.1 Previously Collected Geologic Map Data .......................................... 13 3.1.2 Previously Collected Geospatial Data ............................................... 16 3.2 Available Deep Well and Borehole Data ....................................................... 17 3.3 New Geologic Map Data ................................................................................ 18 4.0 METHODOLOGY ................................................................................................... 20 4.1 Preliminary Review and Identification of Priority Areas ................................. 20 4.2 Compilation of Previously Collected Geologic Data ...................................... 20 4.3 Field Mapping and Collection of New Data ................................................... 21 4.4 Integration of New Geologic Map Data with Previously Collected Data ........ 22 4.5 Analysis of the Geologic Data for Production of Geologic Maps ................... 24 4.5.1 Selection of Map Units and Symbols ................................................. 24 4.5.2 Selection of Map Scale and Extent .................................................... 25 5.0 SOFTWARE ........................................................................................................... 26 6.0 RESULTS ............................................................................................................... 27 6.1 Irish Hills Study Area ..................................................................................... 27 6.2 DCPP Study Area .......................................................................................... 27 6.3 Price Canyon Study Area .............................................................................. 28 6.4 Appendix A: Daily Field Reports .................................................................... 28 Page 4 of 61 GEO. DCPP.TR.14.01, Rev. 0 6.5 Appendix B: Field Photographs ..................................................................... 29 6.6 Appendix C: Field Samples ........................................................................... 29 6.7 Appendix D: GIS Files and Layers ................................................................ 29 6.8 Appendix E: Well Data Report ....................................................................... 29 7.0 ANALYSIS .............................................................................................................. 30 7.1 Nature and Quality of Geologic Mapping in the Study Area .......................... 30 7.2 Stratigraphy of the Study Area ...................................................................... 31 7.2.1 Franciscan Complex Rocks ............................................................... 31 7.2.2 Cretaceous Sandstone ...................................................................... 32 7.2.3 Morro Rock–Islay Hill Volcanic Intrusive Complex ............................ 32 7.2.4 Cambria Felsite .................................................................................. 32 7.2.5 Vaqueros Formation .......................................................................... 32 7.2.6 Rincon Formation .............................................................................. 33 7.2.7 Obispo Formation .............................................................................. 33 7.2.7.1 Volcaniclastic and Clastic Sub-units .................................... 34 7.2.7.2 Obispo Formation, Diabase Sub-unit ................................... 35 7.2.8 Monterey Formation ........................................................................... 35 7.2.9 Pismo Formation ................................................................................ 36 7.2.10 Quaternary Deposits .......................................................................... 37 7.3 Geologic Structure of the Study Areas .......................................................... 37 7.3.1 Folding ............................................................................................... 38 7.3.2 Faulting .............................................................................................. 39 7.3.2.1 Los Osos Fault Zone ........................................................... 40 7.3.2.2 Edna Fault Zone .................................................................. 46 7.3.2.3 San Miguelito Fault Zone ..................................................... 47 7.3.2.4 San Luis Bay Fault Zone ..................................................... 48 7.3.2.5 Shoreline Fault Zone ........................................................... 49 7.4 Changes to Previous Geologic Maps and Compilation Efforts ...................... 50 7.4.1 Northeastern Margin of the Pismo Syncline ...................................... 50 7.4.2 Southwest Limb of the Pismo Syncline, Monterey Formation/ Pismo Formation Contact ............................................................................. 51 7.4.3 Southwest Limb of the Pismo Syncline, Obispo Formation/ Monterey Formation Contact ............................................................................. 51 Page 5 of 61 GEO. DCPP.TR.14.01, Rev. 0 7.4.4 Franciscan Chert and Serpentinite, Los Osos Fault Zone ................. 52 7.4.5 Neogene Marine Deposits Within Western Los Osos Valley ............. 52 7.4.6 New Mapping Offshore of the DCPP ................................................. 53 8.0 CONCLUSIONS ..................................................................................................... 54 9.0 LIMITATIONS ......................................................................................................... 56 10.0 IMPACT EVALUATION .......................................................................................... 57 11.0 REFERENCES ....................................................................................................... 58 Page 6 of 61 GEO. DCPP.TR.14.01, Rev. 0 LISTS OF TABLES, FIGURES, PLATES, APPENDICES, AND ATTACHMENTS Tables Table 3-1 Sources of Previous Geologic Map Data Considered for the GMP Table 3-2 Sources of Previously Collected Geospatial Data Table 4-1 Guidelines for Describing Structural Measurement Uncertainty Figures Figure 1-1 Study Areas and Onshore Seismic-Reflection Data Coverage Figure 3-1 Locations of New Geologic Data Collection Sites Figure 3-2 Locations of Selected Wells Figure 3-3 Geologic Maps by C.A. Hall Considered in This Study Figure 3-4 Geologic Maps Developed for the LTSP Considered in This Study Figure 3-5 Map of the Los Osos Fault Zone by Lettis and Hall (1994) Considered in This Study Figure 3-6 Geologic Maps by T.W. Dibblee Considered in This Study Figure 3-7 Geologic Maps by M.O. Wiegers Considered in This Study Figure 3-8 Offshore Geologic Maps Developed for the Shoreline Fault Zone Report and Unpublished Onshore Map Data Collected in 2009 and 2010 by PG&E Figure 3-9 Geologic Map of the Price Canyon Study Area Figure 7-1 Locations of Significant Revisions to Existing Geologic Maps Figure 7-2 Comparison of (a) Revised and (b) Previous (AMEC, 2012a) Mapping, Northeastern Margin of the Pismo Syncline Figure 7-3 Comparison of (a) Revised and (b) Previous (AMEC, 2012a) Mapping, Pismo Fm./Monterey Fm.Contact Figure 7-4 Comparison of (a) Revised and (b) Previous (PG&E, 2011) Mapping, Monterey Fm./Obispo Fm. Contact Figure 7-5 Comparison of (a) Revised and (b) Previous (AMEC, 2012a) Mapping, Los Osos Fault Zone Page 7 of 61 GEO. DCPP.TR.14.01, Rev. 0 Figure 7-6 Comparison of (a) Revised and (b) Previous (PG&E, 2011) Mapping, Offshore of DCPP Figure 7-7 Comparison of (a) Revised and (b) Previous (PG&E, 2011) Artificial Hillshade Images of the Discharge Cove Area Figure 7-8 Helicopter Magnetic Survey Data of the DCPP Area and Inferred Geologic Contact between Tmod and Tmor Plates Plate 1 Geologic Map of the Irish Hills and Adjacent Area, at 1:32,000 Scale Plate 2 Geologic Map of the
Load more

Recommended publications
  • City of San Luis Obispo Open Space Vegetation Management Plan
    CITY OF SAN LUIS OBISPO OPEN SPACE VEGETATION MANAGEMENT PLAN A Professional Project presented to the Faculty of California Polytechnic State University, San Luis Obispo In Partial Fulfillment of the Requirements for the Degree Master of City and Regional Planning by Danielle Rose Althaus June 2014 ©2014 Danielle Rose Althaus ALL RIGHTS RESERVED ii COMMITTEE MEMBERSHIP TITLE: City of San Luis Obispo Open Space Vegetation Management Plan AUTHOR: Danielle Rose Althaus DATE SUBMITTED: June 2014 COMMITTEE CHAIR: W. David Conn, D. Phil. Professor, City and Regional Planning COMMITTEE MEMBER: Kenneth C. Topping, AICP Lecturer, City and Regional Planning COMMITTEE MEMBER: Robert Hill Natural Resources Manager, City of San Luis Obispo iii ABSTRACT City of San Luis Obispo Open Space Vegetation Management Plan Danielle Rose Althaus This Master’s Professional Project is focused on the development of a draft Vegetation Management Plan for the City of San Luis Obispo Open Space properties. The purpose of the plan is to provide a comprehensive document which identifies how the city is addressing wildfire preparedness in city-owned open space properties. Methods used in plan development include a literature review, content analysis, geographic information systems (GIS), a course audit, and consultation with city staff and other stakeholders. Each open space property is identified in the plan, describing its location, vegetation, topography, assets, access points, water supply, evacuation routes, historical fire data, predominant risk exposure, current wildfire preparedness plan, priority ranking, and a proposed implementation plan. iv ACKNOWLEDGMENTS This project would not have been possible without motivation from Rodger Maggio and Robert Hill. I would like to thank the both of you for your continuous encouragement and support throughout this process.
    [Show full text]
  • 4.1 Geology/Hazards
    Dalidio/San Luis Marketplace Annexation and Development Project EIR Section 4.1 Geology/Hazards 4.1 GEOLOGY/HAZARDS The project site lies within the seismically active coastal region of central California. Regional studies indicate that there are no active or potentially active faults on the project site. However, groundshaking associated with nearby faults could damage or destroy property, structures and transportation infrastructures. These impacts can be mitigated to less than significant levels. In addition, site soils are reported to have a high liquefaction potential, a moderate to high expansion potential and a potential for subsidence. These impacts are considered less than significant with the adherence to mitigation measures. The Dalidio property could potentially be subject to contamination that has migrated from off-site hazardous materials releases. Implementation of recommended mitigation measures, including soils and groundwater testing along the northwestern site boundary to determine the presence of such contamination on site, and appropriate remediation if necessary, would reduce this impact to a less than significant level. The proposed Prado Road/ U.S. Highway 101 interchange and associated improvements could be located on soils that contain residual quantities of aerially-deposited lead (ADL) associated with historic exhaust emissions along U.S. Highway 101. The release of ADL during disturbance of this area would be considered a potentially significant but mitigable health hazard. 4.1.1 Geologic Setting. This section describes the geologic conditions and related hazards of the project site, including faulting, seismically induced ground movement, liquefaction potential, potential for soil expansion/contraction and a subsidence potential. a. Regional Topography. The Dalidio property is located west of U.S.
    [Show full text]
  • Recovery Plan for the Morro Shoulderband Snail and Four Plants from Western San Luis Obispo County, California
    Recovery Plan for the Morro Shoulderband Snail and Four Plants from Western San Luis Obispo County, California Luis Obispo County Maria As the Nation~sprincz§bal conservation a(gen~y, the Department ofthe Interior has reJponsibili!yfor most of ournational!y ownedpublic lands and natural resources. This includesfostering the wisest use ofourland and water resources, protecting ourfish and wild4fe, preserving the environmental and cultural values of ournationalparks and historical places, andprovidingfor the enjoyment of4fe through outdoor recreation. The Department assesses our ene~gv and mineral resources and works to assure that theirdevelopment is in the best interests ofall ourpeople. The Department also has a major responsibili~yforAmerican Indian reservation communities andforpeople who live in island Territories under U.S. administration. Recovery Plan for the Morro Shoulderband Snail and Four Plants from Western San Luis Obispo County, California Helminthoglypta walkeriana (Morro shoulderband snail) A rctostaphylos morroensis (Morro manzanita) Friodictyon altissimum (Indian Knob mountainbaim) Cirsiumfontinale var. obispoense (Chorro Creek bog thistle) Clarkia speciosa ssp. immaculata (Pismo clarkia) prepared by U.S. Fish and Wildlife Service Ventura, California for U.S. Fish and Wildlife Service Portland, Oregon September 1998 Approved: Manager, Califor evada Operations Office, Region 1, U.S. F and Wildlife Service Date: ~2( I ft DISCLAIMER Recovery plans delineate reasonable actions which are believed to be required to recover andlor protect listed species. Plans are published by the U.S. Fish and Wildlife Service, sometimes prepared with the assistance ofrecovery teams, contractors, State agencies, and others. Objectives will be attained and any necessary funds made available subject to budgetary and other constraints affecting the parties involved, as well as the need to address other priorities.
    [Show full text]
  • Appendix B Geology Page B-1 of 112 TABLE of CONTENTS 1
    APPENDIX B ONSHORE-OFFSHORE GEOLOGIC MAP THE SHORELINE FAULT ZONE STUDY AREA, SAN LUIS OBISPO COUNTY Shoreline Fault Zone Report, Appendix B Geology Page B-1 of 112 TABLE OF CONTENTS 1. INTRODUCTION ..................................................................................................................... 5 1.1 Purpose and Objectives........................................................................................................ 5 1.2 Previous Investigations ........................................................................................................ 5 1.3 New Base Map..................................................................................................................... 6 1.4 New Data Sources................................................................................................................ 6 2. METHODOLOGY .................................................................................................................... 7 2.1 Onshore Mapping................................................................................................................. 7 2.2 Offshore Mapping................................................................................................................ 7 3. GEOMORPHOLOGY ............................................................................................................. 10 3.1 San Luis Range .................................................................................................................. 10 3.2 Continental Shelf ..............................................................................................................
    [Show full text]
  • Los Osos Valley Groundwater Basin Bulletin 118
    Central Coast Hydrologic Region California’s Groundwater Los Osos Valley Groundwater Basin Bulletin 118 Los Osos Valley Groundwater Basin • Groundwater Basin Number: 3-8 • County: San Luis Obispo • Surface Area: 6,990 acres (10.9 square miles) Basin Boundaries and Hydrology The Los Osos Valley Groundwater Basin is bounded on the north by Park Ridge, on the south by the Irish Hills, and on the west by Morro Bay. The eastern boundary is a drainage divide separating Los Osos Valley from San Luis Valley. The valley is drained by Los Osos Creek, which flows into Morro Bay. Annual precipitation ranges from 15 to 21 inches. Hydrogeologic Information Water Bearing Formations Groundwater is found in alluvium of Holocene age, dune sand and the Paso Robles Formation of Pleistocene age, and the Careaga Sand of Pliocene age. The specific yield is estimated at 20 percent (DWR 1958). The average specific yield for the basin is 10 percent (USDA 1984; USGS 1988). Holocene Deposits. This alluvium consists of clayey gravel and sand. The thickness of the alluvium ranges from 20 to 65 feet under the Los Osos Creek floodplain (Yates and Wiese 1988). Pleistocene Deposits. Dune sand is composed of unconsolidated, fine to medium-grained arkosic sand with thin clay, silt, and gravel interlayers. The Paso Robles Formation, which is the main water-producing unit in the basin, typically consists of unconsolidated, interbedded clay and clayey, pebbly sand in discontinuous beds and lenses. It has a thickness of about 300 feet (DWR 1989). Clay layers found in the Paso Robles Formation impede the vertical movement of groundwater (DWR 1989).
    [Show full text]
  • A Sensitive Plant and Wildlife Resource Inventory of Diablo Canyon Lands, Volume Ii
    A SENSITIVE PLANT AND.WILDLIFE RESOURCE INVENTORY OF DIABLO CANYON LANDS, VOLUME I: SURVEY PROCEDURES AND A SUMMARY OF SURVEY RESULTS Prepared by: BioSystems Analysis, Inc. 303 Potrero Street, Suite 29-101 Santa Cruz, California 95060 and Pacific Gas and Electric Company Technical and Ecological Services 3400 Crow Canyon Road San Ramon, California 94583 Prepared for: Pacific Gas and Electric Company Diablo Canyon Land Stewardship Committee Diablo Canyon Power Plant Avila Beach, California © 1995 by PG&E (Revised 1996) Legal Notice Pacific Gas and Electric Company (PG&E) makes no warranty or representation, expressed or implied, with respect to the accuracy, completeness, or usefulness of the information contained in this report, or that the use of any information, apparatus, method, or process disclosed in this report may not infringe upon privately owned rights. Nor does PG&E assume any liability with respect to use of, or damages resulting from the use of, any information, apparatus, method, or process disclosed in this report. © 1995 by PG&E All rights reserved EXECUTIVE SUMMARY PG&E owns or controls through long-term lease agreements approximately 10,000 acres of ecologically diverse coastal lands surrounding Diablo Canyon Power Plant in San Luis Obispo County, California. Beginning in 1992, a comprehensive survey of these lands was undertaken to identify and describe all sensitive plant and wildlife resources not previously known that might occur there. Though not required by state or federal regulatory agencies, this voluntary effort is consistent with PG&E's Corporate Policy on Management of Company Real Property (Section 7, paragraphs a and d), as well as specific Best Management Practices identified by the Diablo Canyon Land Stewardship Program (PG&E 1993a).
    [Show full text]
  • Diablo Canyon Units 1 and 2, Central
    PACIFIC GAS AND ELECTRIC COIVIPANY Report Number: GEO. DCPI>.TR.l4.01 GEOSCIENCES DEPARTlVH~ NT Report Revision: Rev. 0 TECHNICAL REPORT Report Date: 6/30/2014 Quality Related: Y Pagel of61 6ho /2-D2 l ~ PREPARED BY: /~ {'. , ~--·· DATE: ______f __ __1____ __ Lettis Consultants Stq~hen Thompson International, Inc. (LCI) Printed Name Organization VERIFIED BY: DATE: c. I'>? b-0/ t.j William Page PG&E Geosciences Department Printed Name Organization APPROVED BY: Printed Name Organization Page 2 of 61 GEO. DCPP.TR.14.01, Rev. 0 RECORD OF REVISIONS Rev. No. Reason for Revision Revision Date Initial Release. This work was defined and tracked under SAPN 0 6/30/2014 50470704. Page 3 of 61 GEO. DCPP.TR.14.01, Rev. 0 TABLE OF CONTENTS Page Signatories ........................................................................................................................ 1 Record of Revisions .......................................................................................................... 2 List of Tables, Figures, Plates, Appendices, and Attachments ......................................... 6 Abbreviations and Acronyms ............................................................................................ 8 1.0 INTRODUCTION .................................................................................................... 10 1.1 Purpose ......................................................................................................... 10 1.2 Intended Use of the Results .........................................................................
    [Show full text]
  • Center for Biological Diversity
    July 25, 2019 Via electronic mail and certified mail, return receipt requested Andrew Wheeler, Administrator U.S. Environmental Protection Agency William Jefferson Clinton Building 1200 Pennsylvania Avenue, N. W. Washington, DC 20460 [email protected] Jim Kurth, Acting Director U.S. Fish and Wildlife Service 1849 C Street, N.W. Washington, D.C. 20240 [email protected] Re: Sixty-day Notice of Intent to Sue Over EPA’s Approval of the Aquifer Exemption for the Arroyo Grande Oil Field Dear Administrator Wheeler: On behalf of the Center for Biological Diversity (“Center”), we hereby provide notice under the Endangered Species Act (“ESA”),1 pursuant to the citizen provision in Section 11(g),2 that the Environmental Protection Agency (“EPA”) is in violation of Section 7(a)(2)3 of the ESA by failing to consult with U.S. Fish and Wildlife Service (“FWS”) in order to ensure that exemption of portions of the Dollie Sands Member of the Pismo Formation in the Arroyo Grande Oilfield from the protection of the Safe Drinking Water Act (“Aquifer Exemption”) does not jeopardize the continued existence of threatened or endangered species. This letter also provides notice of violations of the National Environmental Policy Act (“NEPA”),4 although such notice is not required under law. The Center for Biological Diversity (“Center”) is a non-profit, public interest environmental organization headquartered in Tucson, with regional offices in Oakland and Los Angeles, and numerous additional offices located throughout the United States, dedicated to the 1 16 U.S.C. § 1531 et seq. and its implementing regulations, 50 C.F.R.
    [Show full text]
  • Planning Commission Agenda Report
    Meeting Date: July 26, 2017 Item Number: 1 PLANNING COMMISSION AGENDA REPORT SUBJECT: Public scoping meeting to discuss the scope of the Environmental Impact Report (EIR) being prepared for the Froom Ranch Specific Plan Project located immediately west of Los Osos Valley Road between U.S. Highway 101 and the Irish Hills Plaza. PROJECT ADDRESS: 12165 and 12393 BY: Emily Creel, Consulting Planner Los Osos Valley Road Phone: 543-7095 ext. 6814 email: [email protected] VIA: Shawna Scott, Associate Planner Phone: 781-7176 email: [email protected] FILE NUMBER: SPEC-0143-2017 FROM: Doug Davidson, Deputy DirectorDD RECOMMENDATION: Receive public testimony and provide input to City staff and consultants on any additional scope items or environmental issues that need to be evaluated in the Froom Ranch Specific Plan Project EIR. SITE DATA Applicant John Madonna, John Madonna Construction Company Representative Pam Ricci and Victor Montgomery, RRM Design Group Proposed Medium‐High Density Residential, Zoning/General Medium‐High Density Residential Life Plan Plan Community, High Density (currently Residential, Commercial Retail, under Conservation/Open Space, and Public consideration) Facilities Site Area Approximately 110 acres Environmental An Initial Study of environmental Status impacts has been prepared to identify issues and guide EIR preparation. 1.0 BACKGROUND Froom Ranch is identified in the City of San Luis Obispo Land Use Element as Specific Plan Area 3 (SP-3, Madonna on LOVR), and is subject to preparation of a Specific Plan to accommodate development proposals and address pertinent issues within the Specific Plan Area. The Specific Plan PC1-1 Froom Ranch Specific Plan Project (SPEC-0143-2017) Planning Commission Report – July 26, 2017 Page 2 Area is within the City’s Sphere of Influence and the General Plan anticipates annexation of this area into the City.
    [Show full text]
  • Los Osos Valley Groundwater Basin Fringe Areas Characterization
    LOS OSOS VALLEY GROUNDWATER BASIN FRINGE AREAS CHARACTERIZATION Prepared for SAN LUIS OBISPO COUNTY FLOOD CONTROL AND WATER CONSERVATION DISTRICT May 22, 2018 CLEATH‐HARRIS GEOLOGISTS 71 Zaca Lane, Suite 140 San Luis Obispo, California 93401 (805) 543‐1413 TABLE OF CONTENTS SECTION PAGE EXECUTIVE SUMMARY ...................................................................................................................... 1 1.0 INTRODUCTION ........................................................................................................................... 4 2.0 DATA COMPILATION AND REVIEW ............................................................................................. 5 2.1 Data Compilation .................................................................................................................... 6 2.2 Data Gap Identification ........................................................................................................... 8 3.0 HYDROGEOLOGIC CONCEPTUAL MODEL .................................................................................... 9 3.1 Regional Geologic and Structural Setting of Fringe Areas .................................................... 10 3.2 Principal Aquifers and Aquitards .......................................................................................... 12 3.3 Lateral Boundaries and Restrictions to Flow ........................................................................ 16 3.4 Definable Bottom of the Basin .............................................................................................
    [Show full text]
  • Status of the Endangered Indian Knob Mountainbalm Eriodictyon Altissimum (Namaceae) in Central Coastal California Christopher P
    Bulletin of the Southern California Academy of Sciences Volume 118 | Issue 1 Article 2 2019 Status of the Endangered Indian Knob Mountainbalm Eriodictyon altissimum (Namaceae) in Central Coastal California Christopher P. Kofron U.S. Fish and Wildlife Service, Ventura, [email protected] Connie Rutherford U.S. Fish and Wildlife Service, Ventura, [email protected] Lisa E. Andreano California Department of Parks and Recreation, San Simeon, [email protected] Michael J. Walgren California Department of Parks and Recreation, San Simeon, [email protected] Heather Schneider Santa Barbara Botanic Garden, [email protected] Follow this and additional works at: https://scholar.oxy.edu/scas Part of the Botany Commons, and the Ecology and Evolutionary Biology Commons Recommended Citation Kofron, Christopher P.; Rutherford, Connie; Andreano, Lisa E.; Walgren, Michael J.; and Schneider, Heather () "Status of the Endangered Indian Knob Mountainbalm Eriodictyon altissimum (Namaceae) in Central Coastal California," Bulletin of the Southern California Academy of Sciences: Vol. 118: Iss. 1. Available at: https://scholar.oxy.edu/scas/vol118/iss1/2 This Article is brought to you for free and open access by OxyScholar. It has been accepted for inclusion in Bulletin of the Southern California Academy of Sciences by an authorized editor of OxyScholar. For more information, please contact [email protected]. Kofron et al.: Status of the Endangered Indian Knob Mountainbalm Eriodictyon altissimum Bull. Southern California Acad. Sci. 118(1), 2019, pp. 21–41 © Southern California Academy of Sciences, 2019 Status of the Endangered Indian Knob Mountainbalm Eriodictyon altissimum (Namaceae) in Central Coastal California Christopher P. Kofron,1∗ Connie Rutherford,1 Lisa E.
    [Show full text]
  • Hydrogeology and Water Resources of the Los Osos Valley Ground-Water Basin San Luis Obispo County, California
    HYDROGEOLOGY AND WATER RESOURCES OF THE LOS OSOS VALLEY GROUND-WATER BASIN, SAN LUIS OBISPO COUNTY, CALIFORNIA By Eugene B. Yates and John H. Wiese U.S. GEOLOGICAL SURVEY Water-Resources Investigations Report 88-4081 Prepared in cooperation with the SAN LUIS OBISPO COUNTY FLOOD CONTROL AND WATER CONSERVATION DISTRICT and the CALIFORNIA DEPARTMENT OF WATER RESOURCES 00 o I n CM o Sacramento, California 1988 DEPARTMENT OF THE INTERIOR MANUEL LUjAN, JRj, Secretary U.S. GEOLOGICAL $URVEY Dallas L. Peck, Director For additional information write to: Copies of this report may be purchased from: District Chief U.S. Geological Survey U.S. Geological Survey Books and Open-File Reports Section Federal Building, Room W-2234 Box 25425 2800 Cottage Way Building 810, Federal Center Sacramento, CA 95825 Denver, CO 80225 CONTENTS Page Abstract ................................................................................ 1 Introduction............................................................................. 1 Purpose and scope .................................................................... 3 Description of the study area ............................................................ 3 Well-numbering system ................................................................ 3 Geology of the ground-water basin .......................................................... 5 Regional geology and geologic history .................................................... 5 Geologic units and their water-bearing characteristics .......................................
    [Show full text]