Geology, Soils and Seismicity Baseline Technical Study – Draft
March 9, 2012
Metro Green Line to LAX Phase I – AA/DEIS/DEIR
Metro Green Line to LAX
Phase I
Geology, Soils and SeismicityBaseline Technical Study
Internal Review Draft
Hatch Mott MacDonaldLea+Elliott, Inc.Fehr & Peers Leighton
Terry A. Hayes Associates Inc.Epic Land Solutions
Geology, Soils and Seismicity Baseline Technical Study
Metro Green Line to LAX
Phase I – AA/DEIS/DEIR
Geology, Soils and Seismicity Baseline Technical Study - Draft
March 9, 2012
Document Control Task # Source
5.1.9 Leighton
Version Date Completed
Internal Review Draft February 10, 2012
Draft March 9, 2012
Draft Final
Final
In Association with:
Hatch Mott MacDonald
Lea+Elliott, Inc.
Terry A. Hayes Associates Inc. Epic Land Solutions
Ted TanakaVCA Engineering
D’Leon Consulting EngineersCoast SurveyingCityworks Design
Page i
Geology, Soils and Seismicity Baseline Technical Study - Draft
ed Tanaka VCA Engineering
D’Leon Consulting Engineers Coast Surveying Cityworks Design
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
1. Introduction ................................1.1. Study Background ................................
1.1.1. Alternatives Considered1.2. Report Purpose and Structure
2. Regulatory Framework / Methodology2.1. Federal ................................
2.1.1. Comprehensive Environmental Respon2.1.2. Resource Conservation and Recovery Act2.1.3. Superfund Amendments and Reauthorization Act2.1.4. Toxic Substances Control Act2.1.5. Surface Mining and Reclamation Act
2.2. State ................................2.2.1. Alquist-Priolo Earthquake Fault Zoning Act2.2.2. Seismic Hazards Mapping Act2.2.3. California Public Resources Code2.2.4. California Hazardous Waste Control Law2.2.5. Carpenter-Presley2.2.6. Unified Hazardous Waste and Hazardous Materials Management Regulatory Program ................................2.2.7. La Follette Bill of 1986 (Risk Management Plan)2.2.8. South Coast Air Quality Management District Rule 1403
2.3. Local ................................2.3.1. City of Los Angeles2.3.2. City of Inglewood
2.4. Methodology ................................2.5. Impact Thresholds ................................
2.5.1. National Environmental Policy Act2.5.2. California Environmental Quality Act
3. Affected environment / Existing Conditions3.1. Regional Physiographic Setting
3.1.1. Topography ................................3.1.2. Geology ................................
3.2. Local Physiographic Setting3.2.1. Geologic Structure3.2.2. Groundwater ................................
3.3. Faults and Seismicity ................................3.3.1. General ................................
3.4. Ground Shaking ................................3.5. Liquefaction ................................3.6. Seismically-Induced Settlement3.7. Landslides ................................
Geology, Soils and Seismicity Baseline Technical Study
TABLE OF CONTENTS
...............................................................................................................................................................................................................................
Alternatives Considered ................................................................Structure ..........................................................................................
Regulatory Framework / Methodology ...............................................................................................................................................................................................Comprehensive Environmental Response, Compensation and Liability ActResource Conservation and Recovery Act ..........................................................Superfund Amendments and Reauthorization Act ................................Toxic Substances Control Act................................................................
ning and Reclamation Act ................................................................................................................................................................................................
Priolo Earthquake Fault Zoning Act ................................Seismic Hazards Mapping Act ................................................................California Public Resources Code ................................................................California Hazardous Waste Control Law ..........................................................
Presley-Tanner Hazardous Substances Account ActUnified Hazardous Waste and Hazardous Materials Management Regulatory .............................................................................................................................La Follette Bill of 1986 (Risk Management Plan) ................................South Coast Air Quality Management District Rule 1403 ................................
................................................................................................................................City of Los Angeles ..............................................................................................City of Inglewood ................................................................................................
................................................................................................................................................................................................
National Environmental Policy Act ................................................................California Environmental Quality Act ................................................................
Affected environment / Existing Conditions ................................................................gional Physiographic Setting ................................................................
................................................................................................................................................................................................
Local Physiographic Setting ...........................................................................................Geologic Structure .............................................................................................
................................................................................................
................................................................................................................................................................................................................................................................................................
................................................................................................Induced Settlement ................................................................................................................................................................
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Geology, Soils and Seismicity Baseline Technical Study - Draft
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Unified Hazardous Waste and Hazardous Materials Management Regulatory .............................6
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Metro Green Line to LAX Phase I –AA/DEIS/DEIR
3.8. Hazardous Materials ................................3.8.1. Urban Contamination3.8.2. Oil and Gas ................................
3.9. Mineral Resources ................................3.10. Existing Structures ................................
3.10.1. Central Terminal Area3.10.2. Off-Airport Are
Figure 1.1. Project Study Area – Figure 1.2. Alignment Location MapFigure 3.1. Regional Geologic MapFigure 3.2. Regional Fault Map ................................Figure 3.3. Historical Seismicity MapFigure 3.4. Seismic Hazard MapFigure 3.5. Environmental Sites of HighFigure 3.6. Methane Hazards and DOGGR Oil WellsFigure 3.7. Existing Structures ................................
Table 3.1. Active Faults ................................Table 3.2. Ground Motion Study ResultsTable 3.3. High Priority Environmental Concern SitesTable 3.4. Off-Airport Area Structures
• Barrows, A.G., 1974, A Review of the Geology and Earthquake History of the NewportInglewood Structural Zone, Southern CaliforniaSpecial Report 114, 115 p.
• Blake, T.F., 2000, EQSEARCH, Computer Program for Windows Version 4.0.• Bryant, W.A., 1988, Recently Active Traces of the NewportAngeles and Orange Counties, CaliforniaFile Report 88-14, 15 p.
• Camp, Dresser & McKee, Inc., 2001, EIS/EIR, January.
• CGS, 2002, Alquist-Priolo Fault Zones GIS server.• CGS, 2003, Seismic Hazard Mapping Program. • CGS, 2010a, Quaternary and Younger Faults GIS server.
Geology, Soils and Seismicity Baseline Technical Study
................................................................................................Urban Contamination ........................................................................................
................................................................................................................................................................................................................................................................................................
Central Terminal Area ........................................................................................Airport Area ................................................................................................
FIGURES
Overview ................................................................Figure 1.2. Alignment Location Map .............................................................................................Figure 3.1. Regional Geologic Map .............................................................................................
................................................................................................Figure 3.3. Historical Seismicity Map .........................................................................................Figure 3.4. Seismic Hazard Map ................................................................................................Figure 3.5. Environmental Sites of High-Priority/Concern .........................................................Figure 3.6. Methane Hazards and DOGGR Oil Wells ................................................................
................................................................................................
TABLES
................................................................................................3.2. Ground Motion Study Results ................................................................
Table 3.3. High Priority Environmental Concern Sites ...............................................................Airport Area Structures .........................................................................................
REFERENCES
A Review of the Geology and Earthquake History of the NewportInglewood Structural Zone, Southern California: California Division of Mines and Geology
.F., 2000, EQSEARCH, Computer Program for Windows Version 4.0.
Recently Active Traces of the Newport-Inglewood Fault Zone, Los Angeles and Orange Counties, California: California Division of Mines and Geology Open
Camp, Dresser & McKee, Inc., 2001, Earth/Geology Technical Report, LAX Master Plan
Priolo Fault Zones GIS server.
CGS, 2003, Seismic Hazard Mapping Program.
, Quaternary and Younger Faults GIS server. Page iii
Geology, Soils and Seismicity Baseline Technical Study - Draft
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A Review of the Geology and Earthquake History of the Newport-: California Division of Mines and Geology
.F., 2000, EQSEARCH, Computer Program for Windows Version 4.0.
Inglewood Fault Zone, Los : California Division of Mines and Geology Open-
Earth/Geology Technical Report, LAX Master Plan
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
• CGS, 2010b, Southern California USGS Geology GIS server.• CDMG, 1962, Geologic Map of California Long Beach Sheet• CDMG, 1986a, Guidelines for Geologic/Seismic Considerations in Environmental Impact Reports.
• CDMG, 1986b, State of California SpeQuadrangle, Revised Official Map
• CDMG, 1998, Seismic Hazard Zone Report for the Inglewood 7.5 Minute Quadrangle, Los Angeles County, California, Seismic Hazard Zone Report 027.
• CDMG, 1998, Seismic Hazard Zone Report for the Venice 7.5 Minute Quadrangle, Los Angeles County, California, Open File Report 98
• CDMG, 1999, State of California Seismic Hazard Zones Map for the Inglewood 7.5 Minute Quadrangle, Los Angeles County, Califo
• CDMG, 1999, State of California Seismic Hazard Zones Map for the Venice 7.5 Minute Quadrangle, Los Angeles County, California
• City of Los Angeles, 1996, Safety Element of th• City of Los Angeles, 2004, Methane and Methane Buffer Zones Map• ConnectLAX, 2011a, Preliminary Definition of Alternatives Utilities Technical MemoNovember 30.
• ConnectLAX, 2011b, Draft Preliminary Definition of Alte16.
• ConnectLAX, 2012, Draft Hazardous Materials Site Assessment Report (Phase 1), dated January 19, 2012.
• County of Los Angeles, 1990• Dibblee, Jr., 2007, Geologic Map of the Venice and Inglewood QuadCounty, California; Dibblee Geological Foundation Map DF
• DOGGR , 2010, District 1 Oil Wells.• Esri Basemaps Resource Center, 2012• Esri Basemaps Resource Center, 2012• FEMA, 2010, Flood Hazard Zones in GIS server.• Hart, E.W. and Bryant, W.A., 2007, Priolo Earthquake Fault Zoning Act with Index to Earthquake Fault Zones Maps, CaliforniaDivision of Mines and Geology Special Publication 42, 1
• Hauksson, E., 1987, Seismotectonics of the NewportAngeles Basin, Southern CaliforniaNo. 2, pp. 539-561.
• Hill, M.L., 1954, Tectonics of Faulting in Southern CalifoGeology of Southern California2, pp. 539-561.
Geology, Soils and Seismicity Baseline Technical Study
, Southern California USGS Geology GIS server.
Geologic Map of California Long Beach Sheet, scale 1:250,000.
Guidelines for Geologic/Seismic Considerations in Environmental Impact
State of California Special Studies Zones Map for the Inglewood Quadrangle, Revised Official Map, Scale 1:24,000, dated July 1, 1986.
Seismic Hazard Zone Report for the Inglewood 7.5 Minute Quadrangle, Los , Seismic Hazard Zone Report 027.
Seismic Hazard Zone Report for the Venice 7.5 Minute Quadrangle, Los , Open File Report 98-27.
State of California Seismic Hazard Zones Map for the Inglewood 7.5 Minute Quadrangle, Los Angeles County, California, scale 1:24,000, dated March 25, 1999.
State of California Seismic Hazard Zones Map for the Venice 7.5 Minute Quadrangle, Los Angeles County, California, scale 1:24,000, dated March 25, 1999.
Safety Element of the Los Angeles City General Plan
Methane and Methane Buffer Zones Map.
Preliminary Definition of Alternatives Utilities Technical Memo
Draft Preliminary Definition of Alternatives Report, dated December
ConnectLAX, 2012, Draft Hazardous Materials Site Assessment Report (Phase 1), dated
1990, Seismic Safety Element.
Geologic Map of the Venice and Inglewood Quadrangles, Los Angeles ; Dibblee Geological Foundation Map DF-322.
DOGGR , 2010, District 1 Oil Wells.
Esri Basemaps Resource Center, 2012a, Bing Street Map.
Esri Basemaps Resource Center, 2012b, USGS Topographic Maps.
ard Zones in GIS server.
Hart, E.W. and Bryant, W.A., 2007, Fault-Rupture Hazard Zones in California, AlquistPriolo Earthquake Fault Zoning Act with Index to Earthquake Fault Zones Maps, CaliforniaDivision of Mines and Geology Special Publication 42, 1-42 p.
Seismotectonics of the Newport-Inglewood Fault Zone in the Los Angeles Basin, Southern California: Bulletin Seismological Society of America, Volume 77,
Tectonics of Faulting in Southern California in Jahns, R. H., Editor, Geology of Southern California: Bulletin Seismological Society of America, Volume 77, No.
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Geology, Soils and Seismicity Baseline Technical Study - Draft
, scale 1:250,000.
Guidelines for Geologic/Seismic Considerations in Environmental Impact
cial Studies Zones Map for the Inglewood
Seismic Hazard Zone Report for the Inglewood 7.5 Minute Quadrangle, Los
Seismic Hazard Zone Report for the Venice 7.5 Minute Quadrangle, Los
State of California Seismic Hazard Zones Map for the Inglewood 7.5 Minute , scale 1:24,000, dated March 25, 1999.
State of California Seismic Hazard Zones Map for the Venice 7.5 Minute , scale 1:24,000, dated March 25, 1999.
e Los Angeles City General Plan.
Preliminary Definition of Alternatives Utilities Technical Memo, dated
, dated December
ConnectLAX, 2012, Draft Hazardous Materials Site Assessment Report (Phase 1), dated
rangles, Los Angeles
Rupture Hazard Zones in California, Alquist-Priolo Earthquake Fault Zoning Act with Index to Earthquake Fault Zones Maps, California
Inglewood Fault Zone in the Los : Bulletin Seismological Society of America, Volume 77,
rnia in Jahns, R. H., Editor, : Bulletin Seismological Society of America, Volume 77, No.
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
• Jennings, C.W., 1977, Geological Map of CaliforniaGeology Map No. 2, scale 1:750,000.
• Moody, J. D., and Hill, M.J., 1956, Bulletin, v. 67, pp. 1207-1246.
• Risk Engineering, Inc., 2011,Ground Motion Estimation.
• Poland, J.F., Piper, A.M., and Others, 1956, Long Beach-Santa Ana Area, California162 p. Plate 1.
• USGS, 1964, Inglewood Quadrangle, Los Angeles County, California 7.5 Minute Seriesscale 1:24,000, Contour Interval 5 Feet.
• USGS, 2011, National Earthquake Information Center.• Woodford, A.O., Schoellhamer, J.E., Vedder, J.G., and Yerkes, R.F., 1954, Los Angeles Basin, in Jahns, R.H. (editor), Geology of Southern CaliforniaDivision of Mines and Geology Bulletin 170, pp. 65
• Wright, T.L., 1991, Structural Geology and Tectonic Evolution if the Los Angeles Basin, California, in Biddle, K.T. (editor), Active Margin Basins: American Association of Petroleum Geologists Memoir 52, pp. 35
• Yerkes, R.F., McCulloh, T.H., Schoellhamer, J.E. and Vedder, J.G., 1965, Angeles Basin, California -- An Introduction: U. S. Geological Survey Professional Paper 420-A, 57 p.
• Ziony, J.I., and Yerkes, R.F., 1985,Ziony, J.I. (editor), Evaluating Earthquake Hazards in the Los Angeles Region Science Perspective: U.S. Geological Survey Professional Paper 1360, pp. 43
Geology, Soils and Seismicity Baseline Technical Study
Geological Map of California: California Division of Mines and Geology Map No. 2, scale 1:750,000.
Moody, J. D., and Hill, M.J., 1956, Wrench Fault Tectonics: Geological Society of America1246.
, EZ-Frisk 7.60 Build 001, Computer Program for Earthquake
A.M., and Others, 1956, Ground Water Geology of the Coastal Zone, Santa Ana Area, California: U.S. Geological Survey Water Supply Paper 1109,
Inglewood Quadrangle, Los Angeles County, California 7.5 Minute Seriesale 1:24,000, Contour Interval 5 Feet.
USGS, 2011, National Earthquake Information Center.
Woodford, A.O., Schoellhamer, J.E., Vedder, J.G., and Yerkes, R.F., 1954, Geology of the Los Angeles Basin, in Jahns, R.H. (editor), Geology of Southern California: Division of Mines and Geology Bulletin 170, pp. 65-81.
Structural Geology and Tectonic Evolution if the Los Angeles Basin, , in Biddle, K.T. (editor), Active Margin Basins: American Association of
ts Memoir 52, pp. 35-134.
Yerkes, R.F., McCulloh, T.H., Schoellhamer, J.E. and Vedder, J.G., 1965, Geology of the Los An Introduction: U. S. Geological Survey Professional Paper
Ziony, J.I., and Yerkes, R.F., 1985, Evaluating Earthquake and Surface-Faulting Potential in Ziony, J.I. (editor), Evaluating Earthquake Hazards in the Los Angeles Region
: U.S. Geological Survey Professional Paper 1360, pp. 43
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Geology, Soils and Seismicity Baseline Technical Study - Draft
: California Division of Mines and
Wrench Fault Tectonics: Geological Society of America
Computer Program for Earthquake
Ground Water Geology of the Coastal Zone, : U.S. Geological Survey Water Supply Paper 1109,
Inglewood Quadrangle, Los Angeles County, California 7.5 Minute Series,
Geology of the : California
Structural Geology and Tectonic Evolution if the Los Angeles Basin, , in Biddle, K.T. (editor), Active Margin Basins: American Association of
Geology of the Los An Introduction: U. S. Geological Survey Professional Paper
Faulting Potential in Ziony, J.I. (editor), Evaluating Earthquake Hazards in the Los Angeles Region - An Earth-
: U.S. Geological Survey Professional Paper 1360, pp. 43-91.
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
ABBREVIATIONS / ACRO AA ...................Alternatives AnalysisASTM .............American Standard Test Methodbgs ..................below ground surfaceCBC ................California Building CodeCEQA..............California Environmental Quality ActCDMG ............California Department of Conservation, Division of Mines and GeologyCGS…………….California GeologicaCIDH…………..Cast-In-Drilled HoleCTA .................Central Terminal AreaDBE ................Design Basis EarthquakeDEIR…………...Draft Environmental Impact ReportDEIS……………Draft Environmental Impact StatementDOGGR……….Department of Oil, Gas, and GeothermaEIR ..................Environmental Impact ReportEIS ..................Environmental Impact StatementEFZ……………..Earthquake Fault ZoneEPB ..................earth pressure balanceFAA .................Federal Aviation AdministrationFEMA ............Federal Emergency Management AgencyFTA .................Federal Transit Administrationksi ...................kips per square inchLADBS ............City of Los Angeles Department of Building and SafetyLAWA .............Los Angeles World AirportsLAX .................Los Angeles International AirportLRTP ...............Long Range Transportation PlanMCE ...............Maximum Considered EarthquakeMDE ...............Maximum Design EarthquakeMPE ................Most Probable EventMetro .............Los Angeles County Metropolitan Transportation AuthorityMOF ...............Maintenance and Operations FacilityMSL…………….Mean Sea Level NEPA ..............National Environmental Policy ActNGA ...............Next Generation AttenuationNIFZ……………Newport Inglewood Fault ZoneODE ...............Operating Design EarthquakePCC…………….Portland Cement Concretepcf ..................pounds per cubic footPHGA………….Peak Horizontal Ground AccelerationPSHA ..............Probabilistic Seismic Hazard Analysispsi ...................pounds per square inchROW ...............Right-of-way
Geology, Soils and Seismicity Baseline Technical Study
ABBREVIATIONS / ACRONYMS
atives Analysis American Standard Test Method below ground surface California Building Code California Environmental Quality Act
epartment of Conservation, Division of Mines and GeologyCGS…………….California Geological Survey (formerly known as CDMG)
Drilled Hole Central Terminal Area Design Basis Earthquake
Environmental Impact Report ……………Draft Environmental Impact Statement
DOGGR……….Department of Oil, Gas, and Geothermal Resources Environmental Impact Report Environmental Impact Statement
EFZ……………..Earthquake Fault Zone earth pressure balance Federal Aviation Administration Federal Emergency Management Agency Federal Transit Administration kips per square inch City of Los Angeles Department of Building and Safety Los Angeles World Airports Los Angeles International Airport Long Range Transportation Plan Maximum Considered Earthquake Maximum Design Earthquake ost Probable Event
Los Angeles County Metropolitan Transportation Authority Maintenance and Operations Facility
National Environmental Policy Act Next Generation Attenuation Newport Inglewood Fault Zone Operating Design Earthquake Portland Cement Concrete pounds per cubic foot
PHGA………….Peak Horizontal Ground Acceleration Probabilistic Seismic Hazard Analysis pounds per square inch
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Geology, Soils and Seismicity Baseline Technical Study - Draft
epartment of Conservation, Division of Mines and Geology
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
SSPWC ...........Specifications of Public WoTSM ................Transportation System ManagementUBE ................Upper-Bound EarthquakeUSGS…………..United States Geological Survey
Geology, Soils and Seismicity Baseline Technical Study
Specifications of Public Works Construction Transportation System Management
Bound Earthquake United States Geological Survey
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Geology, Soils and Seismicity Baseline Technical Study - Draft
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
1. INTRODUCTION
1.1. STUDY BACKGROUND The Los Angeles County Metropolitan Transportation Authority (Metro), Federal Transit Administration (FTA), and Federal Aviation Administration (FAA) have initiated a Draft Environmental Impact Statement Metro Green Line to Los Angeles International Airport (being prepared to comply with the National Environmental Policy Act (NEPA) and California Environmental Quality Act (CEQA). The focus of this study is to plan, design and environmentally assess a fixed guideway transit connection between Metro’s regional studied by Metro, Los Angeles World Airports (LAWA), and other agencies, with recent efforts including the ongoing LAX Specific Plan Amendment Process,Interagency Task Force (2008), LAXExtension (1994). The Measure R sales tax, passed by Los Angeles County voters in 2008, included $200 million in funding for a fixed guideway connection to LAX. It is also identified in the financially constrained portion of Metro’s current Long Range Transportation Plan (LRTP). This study will examine potential connections between the planned Metro Crenshaw/LAX Transit Corridor Project’s Aviation/Century Station and the LAX Central Terminal Area (CTAAlternatives considered are summarized in Section by Manchester Avenue to the north, La Cienega Boulevardthe south and the LAX air cargo area toAngeles and Inglewood. An overview of the 1.1.1. Alternatives Considered Several potential alternatives, which include various routing and station options, are currenbeing studied as part of this Draft EIS/EIR. The number of alternatives and options is expected to decrease as the feasibility analysis advances and options that are determined not to meet the purpose and need or initial screening criteria are set asiconsideration. The alternatives being studied include:
• No Build – Existing transit and highway plans and programmed improvements through the year 2035.
• Transportation Systems Management (TSM)improvements to roadways designed to improve bus speeds along existing roadways from the Aviation/Century Station to LAX.
Geology, Soils and Seismicity Baseline Technical Study
The Los Angeles County Metropolitan Transportation Authority (Metro), Federal Transit n (FTA), and Federal Aviation Administration (FAA) have initiated a Draft
Environmental Impact Statement / Draft Environmental Impact Report (Draft EIS/Los Angeles International Airport (LAX) project. The Draft
the National Environmental Policy Act (NEPA) and California Environmental Quality Act (CEQA).
The focus of this study is to plan, design and environmentally assess a fixed guideway transit connection between Metro’s regional rail system and LAX. Such a connection has been studied by Metro, Los Angeles World Airports (LAWA), and other agencies, with recent efforts including the ongoing LAX Specific Plan Amendment Process, LAX/Metro Green Line
Force (2008), LAX Master Plan (2004) and the Metro Green Line Northern Extension (1994). The Measure R sales tax, passed by Los Angeles County voters in 2008, included $200 million in funding for a fixed guideway connection to LAX. It is also identified
y constrained portion of Metro’s current Long Range Transportation Plan
This study will examine potential connections between the planned Metro Crenshaw/LAX Transit Corridor Project’s Aviation/Century Station and the LAX Central Terminal Area (CTAAlternatives considered are summarized in Section 1.1.1. The Project Study Area by Manchester Avenue to the north, La Cienega Boulevard to the east, Imperial Highway to the south and the LAX air cargo area to the west, and includes portions of the Cities of Los
. An overview of the Project Study Area is shown in Figure
Several potential alternatives, which include various routing and station options, are currenbeing studied as part of this Draft EIS/EIR. The number of alternatives and options is expected to decrease as the feasibility analysis advances and options that are determined not to meet the purpose and need or initial screening criteria are set aside from further consideration. The alternatives being studied include:
Existing transit and highway plans and programmed improvements through
Transportation Systems Management (TSM) – Lower cost capital and operational ts to roadways designed to improve bus speeds along existing roadways from
the Aviation/Century Station to LAX.
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Geology, Soils and Seismicity Baseline Technical Study - Draft
The Los Angeles County Metropolitan Transportation Authority (Metro), Federal Transit n (FTA), and Federal Aviation Administration (FAA) have initiated a Draft
Draft EIS/EIR) for the Draft EIS/EIR is
the National Environmental Policy Act (NEPA) and California
The focus of this study is to plan, design and environmentally assess a fixed guideway transit rail system and LAX. Such a connection has been
studied by Metro, Los Angeles World Airports (LAWA), and other agencies, with recent efforts LAX/Metro Green Line
Master Plan (2004) and the Metro Green Line Northern Extension (1994). The Measure R sales tax, passed by Los Angeles County voters in 2008, included $200 million in funding for a fixed guideway connection to LAX. It is also identified
y constrained portion of Metro’s current Long Range Transportation Plan
This study will examine potential connections between the planned Metro Crenshaw/LAX Transit Corridor Project’s Aviation/Century Station and the LAX Central Terminal Area (CTA).
Study Area is bounded to the east, Imperial Highway to
, and includes portions of the Cities of Los Study Area is shown in Figure 1.1.
Several potential alternatives, which include various routing and station options, are currently being studied as part of this Draft EIS/EIR. The number of alternatives and options is expected to decrease as the feasibility analysis advances and options that are determined not
de from further
Existing transit and highway plans and programmed improvements through
Lower cost capital and operational ts to roadways designed to improve bus speeds along existing roadways from
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
• Build Alternatives – Transit system(s) designed to connect or provide a more convenient connection to the airport for Metro Green and Crenshaw/Lmake use of a variety of technologies, such as light rail transit (LRT), automated people mover (APM), or bus rapid transit (BRT).
Figure
Source: ConnectLAX, 2011
1.2. REPORT PURPOSE AND STRUCTURE This report presents the results of Metro Green Line to LAX projectFigure 1.2, Alignment Location Map
Geology, Soils and Seismicity Baseline Technical Study
Transit system(s) designed to connect or provide a more convenient connection to the airport for Metro Green and Crenshaw/LAX passengers. System can make use of a variety of technologies, such as light rail transit (LRT), automated people mover (APM), or bus rapid transit (BRT).
Figure 1.1. Project Study Area – Overview
TRUCTURE
This report presents the results of a preliminary geotechnical evaluation for the proposed project. The project alignments under consideration are
nment Location Map.
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Geology, Soils and Seismicity Baseline Technical Study - Draft
Transit system(s) designed to connect or provide a more convenient AX passengers. System can
make use of a variety of technologies, such as light rail transit (LRT), automated people
for the proposed project alignments under consideration are shown on
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
Figure
Sources: Esri, 2012b; ConnectLAX, 2011
The objective of this study is to conditions and federal, state, and local regulations relevant to the proposed projectexplorations were performed as part of this study.
Geology, Soils and Seismicity Baseline Technical Study
Figure 1.2. Alignment Location Map
ConnectLAX, 2011
to describe geotechnical/subsurface/seismic existing site eral, state, and local regulations relevant to the proposed project
explorations were performed as part of this study.
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Geology, Soils and Seismicity Baseline Technical Study - Draft
describe geotechnical/subsurface/seismic existing site eral, state, and local regulations relevant to the proposed project. No
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
2. REGULATORY FRAMEWORK Several federal and state laws regulate and protect geology, soils, and geologic resources. Below is a list of these statutes.
2.1. FEDERAL 2.1.1. Comprehensive Environmental Response, Compensation and Liability Act The Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) of 1980 defines the term hazardous substance as any substanexposure to which results in, or may result in, adverse effects on health or safety. 2.1.2. Resource Conservation and Recovery Act The Resource Conservation and Recovery Act control hazardous waste from “cradletreatment, storage, and disposal of hazardous waste(EPA). The 1986 Amendments to the act also give the EPA the authorities to address environmental issues which may arise from underground petroleum storage tanks and other underground storage tanks. 2.1.3. Superfund Amendments and Reauthorization Act The Superfund Amendments and Reauthorization Actstress the importance of permanent site remediationSuperfund actions to follow State and Federal environmental law and regulations; increases state involvement in all phases of Superfund activities; increases focus on human health issues; encourages citizen input to remediation sites; and increases the size of the fund to 8.5 Billion US Dollars. SARA also requires the EPA to have an established Hazard Ranking System to accurately assess the relative degree of risk to human health at hazasites. 2.1.4. Toxic Substances Control Act The Toxic Substances Control Actrequire reporting, record-keeping, testing requirements, and restrictions of specific chemical substances and/or mixtures. The act specifically addresses production, importation, use, and disposal of a number of specific chemicals, including polychlorinated biphenyls (PCBs), asbestos, radon, and lead-based paint.
Geology, Soils and Seismicity Baseline Technical Study
FRAMEWORK / METHODOLOGY
Several federal and state laws regulate and protect geology, soils, and geologic resources.
Comprehensive Environmental Response, Compensation and Liability Act
The Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) of 1980 defines the term hazardous substance as any substance, material, or waste, the exposure to which results in, or may result in, adverse effects on health or safety.
Resource Conservation and Recovery Act
The Resource Conservation and Recovery Act (RCRA) of 1976 designates the authority to us waste from “cradle-to-grave,” including generation, transportation,
treatment, storage, and disposal of hazardous waste to the Environmental Protection Agency The 1986 Amendments to the act also give the EPA the authorities to address
tal issues which may arise from underground petroleum storage tanks and other
Superfund Amendments and Reauthorization Act
endments and Reauthorization Act (SARA) of 1986 amendsof permanent site remediation of hazardous waste sites;
State and Federal environmental law and regulations; increases state involvement in all phases of Superfund activities; increases focus on human health
; encourages citizen input to remediation sites; and increases the size of the fund to 8.5 Billion US Dollars. SARA also requires the EPA to have an established Hazard Ranking System to accurately assess the relative degree of risk to human health at haza
Toxic Substances Control Act
The Toxic Substances Control Act (TSCA) of 1976 designates to the EPA the authority to keeping, testing requirements, and restrictions of specific chemical es. The act specifically addresses production, importation, use, and
disposal of a number of specific chemicals, including polychlorinated biphenyls (PCBs), based paint.
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Geology, Soils and Seismicity Baseline Technical Study - Draft
Several federal and state laws regulate and protect geology, soils, and geologic resources.
Comprehensive Environmental Response, Compensation and Liability Act
The Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) of ce, material, or waste, the
exposure to which results in, or may result in, adverse effects on health or safety.
of 1976 designates the authority to including generation, transportation,
to the Environmental Protection Agency The 1986 Amendments to the act also give the EPA the authorities to address
tal issues which may arise from underground petroleum storage tanks and other
amends CERCLA to of hazardous waste sites; requires that
State and Federal environmental law and regulations; increases state involvement in all phases of Superfund activities; increases focus on human health
; encourages citizen input to remediation sites; and increases the size of the fund to 8.5 Billion US Dollars. SARA also requires the EPA to have an established Hazard Ranking System to accurately assess the relative degree of risk to human health at hazardous waste
designates to the EPA the authority to keeping, testing requirements, and restrictions of specific chemical es. The act specifically addresses production, importation, use, and
disposal of a number of specific chemicals, including polychlorinated biphenyls (PCBs),
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
2.1.5. Surface Mining and Reclamation Act The Surface Mining and Reclamation Act (SMCRA) of 1977 and all revisions through December 31, 1993, establishes a nationwide program to protect society and the environment from adverse effects of surface coal mining operations, and to assure that the rights of surface landowners and other persons with a legal interest in the land are fully protected from such operations. Further, the act assures that adequate procedures are undertaken to reclaim surface areas as contemporaneously as possible with the surface coal mining operatimining operations are not conducted where reclamation as required by this act is not feasible, and that surface coal mining operations are so conducted as to protect the environment.
2.2. STATE 2.2.1. Alquist-Priolo Earthquake Fault Zoning Act The Alquist-Priolo Earthquake Fault Zoning Act effective January 1, 1994, provide policies and criteria to assist cities, counties, and state agencies in the exercise of their responsibility to prohibit the location of developments and structures for occupancy across the trace of active faults. of the state with increased safety and to minimize the loss of life during and immediately following earthquakes by facilitating seismic retrofitting tohistorical buildings, against ground shaking.active earthquake faults.
2.2.2. Seismic Hazards Mapping Act The Seismic Hazards Mapping Act (the Act) of 1990 (Public ResourceDivision 2) directs the California Department of Conservation (DOC), Division of Mines and Geology (DMG) to delineate seismic hazard zones. threat to public health and safety and to minimize theand mitigating seismic hazards. Cities, counties, and state agencies are directed to use the seismic hazard zone maps in their landrequires that site-specific geotecurban development projects within the hazard zones. hazards are to be conducted under guidelines established by the California State Mining and Geology Board (DOC, 2008; also available on the Internet at:cgs/shzp/webdocs/Documents/sp117.pdf 2.2.3. California Public Resources Code Pursuant to Public Resources Code, Section 2200(CGS) of the Department of Conservation
Geology, Soils and Seismicity Baseline Technical Study
Surface Mining and Reclamation Act
Reclamation Act (SMCRA) of 1977 and all revisions through December 31, 1993, establishes a nationwide program to protect society and the environment from adverse effects of surface coal mining operations, and to assure that the rights of
s and other persons with a legal interest in the land are fully protected from Further, the act assures that adequate procedures are undertaken to reclaim
surface areas as contemporaneously as possible with the surface coal mining operatimining operations are not conducted where reclamation as required by this act is not feasible, and that surface coal mining operations are so conducted as to protect the environment.
Priolo Earthquake Fault Zoning Act
Priolo Earthquake Fault Zoning Act effective January 1, 1994, is intended to provide policies and criteria to assist cities, counties, and state agencies in the exercise of their responsibility to prohibit the location of developments and structures for occupancy across the trace of active faults. Further, it is the intended to provide the citizens of the state with increased safety and to minimize the loss of life during and immediately following earthquakes by facilitating seismic retrofitting to strengthen buildings, including historical buildings, against ground shaking. This Act applies to projects located in areas with
Seismic Hazards Mapping Act
The Seismic Hazards Mapping Act (the Act) of 1990 (Public Resources Code, Chapter 7.8, Division 2) directs the California Department of Conservation (DOC), Division of Mines and Geology (DMG) to delineate seismic hazard zones. The purpose of the Act is to reduce the threat to public health and safety and to minimize the loss of life and property by identifying and mitigating seismic hazards. Cities, counties, and state agencies are directed to use the seismic hazard zone maps in their land-use planning and permitting processes.
specific geotechnical investigations be performed prior to permitting most urban development projects within the hazard zones. Evaluation and mitigation of seismic hazards are to be conducted under guidelines established by the California State Mining and
(DOC, 2008; also available on the Internet at: http://www.conservation.ca.gov/cgs/shzp/webdocs/Documents/sp117.pdf
California Public Resources Code
Pursuant to Public Resources Code, Section 2200-2211, the California Geological Surveyof the Department of Conservation is tasked with managing programs
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Geology, Soils and Seismicity Baseline Technical Study - Draft
Reclamation Act (SMCRA) of 1977 and all revisions through December 31, 1993, establishes a nationwide program to protect society and the environment from adverse effects of surface coal mining operations, and to assure that the rights of
s and other persons with a legal interest in the land are fully protected from Further, the act assures that adequate procedures are undertaken to reclaim
surface areas as contemporaneously as possible with the surface coal mining operations, that mining operations are not conducted where reclamation as required by this act is not feasible, and that surface coal mining operations are so conducted as to protect the environment.
is intended to provide policies and criteria to assist cities, counties, and state agencies in the exercise of their responsibility to prohibit the location of developments and structures for human
Further, it is the intended to provide the citizens of the state with increased safety and to minimize the loss of life during and immediately
strengthen buildings, including This Act applies to projects located in areas with
s Code, Chapter 7.8, Division 2) directs the California Department of Conservation (DOC), Division of Mines and
The purpose of the Act is to reduce the loss of life and property by identifying
and mitigating seismic hazards. Cities, counties, and state agencies are directed to use the use planning and permitting processes. The Act
hnical investigations be performed prior to permitting most Evaluation and mitigation of seismic
hazards are to be conducted under guidelines established by the California State Mining and http://www.conservation.ca.gov/
e California Geological Survey to reduce the
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loss of life and property and protect the environment by mitigation of geologic hazards. Specific activities to be carried out by the divassessment, including identification and mapping of geologic hazards and estimates of their potential consequence to life, property, and the environment, and likelihood of occurrence. Further, the division is responsible for information advisory services, emergency response to geologic hazards, and development and application of mitigation methods.undergoing environmental review must fully address and mitigate impacts of geologic hazards identified by the CGS. 2.2.4. California Hazardous Waste Control Law The California Hazardous Waste Control California Hazardous Waste Control Program of 1972, by providing definitions of “waste” and what is “hazardous;” by creating a hazardous waste tracking program; and by creating a technical reference center for public and private use for dealing with all aspects hazardous waste management. 2.2.5. Carpenter-Presley-Tanner Hazardous Substances Account Act The Carpenter-Presley-Tanner hazardous Waste Substances Account Act of 1981 created the Hazardous Substance Account and established a fee schedule on the land disposal of hazardous waste to cover the costs of remedial activities (site cleanup) and associated administrative costs, hazardous substance response equipment, health effects studies, and the expenses of the Hazardous Waste Cleanup Arbitration panel. 2.2.6. Unified Hazardous Waste and Hazardous Materials Management Regulatory Program The Unified Hazardous Waste and Hazardous Materials Management Regulatory Program establishes a set of guidelines concerning all those who deal with, at some point, the management of hazardous materials. 2.2.7. La Follette Bill of 1986 (Risk Management Plan) The La Follette Bill of 1986 (Risk Management Plan) requires a Risk Management Plan be prepared for commercial operations which 2.2.8. South Coast Air Quality Management District Rule 1403 The South Coast Air Quality Management District Rule 1403 requires an AsbeNotification Form to be filled out by those who wish to demolish a building known to contain, or suspected of containing asbestos.
Geology, Soils and Seismicity Baseline Technical Study
loss of life and property and protect the environment by mitigation of geologic hazards. Specific activities to be carried out by the division include, but are not limited to, hazard assessment, including identification and mapping of geologic hazards and estimates of their potential consequence to life, property, and the environment, and likelihood of occurrence.
responsible for information advisory services, emergency response to geologic hazards, and development and application of mitigation methods. Projects undergoing environmental review must fully address and mitigate impacts of geologic
California Hazardous Waste Control Law
The California Hazardous Waste Control Law of 1973 provided emergency regulations for the California Hazardous Waste Control Program of 1972, by providing definitions of
rdous;” by creating a hazardous waste tracking program; and by reference center for public and private use for dealing with all aspects
Tanner Hazardous Substances Account Act
Tanner hazardous Waste Substances Account Act of 1981 created the Hazardous Substance Account and established a fee schedule on the land disposal of hazardous waste to cover the costs of remedial activities (site cleanup) and associated
nistrative costs, hazardous substance response equipment, health effects studies, and the expenses of the Hazardous Waste Cleanup Arbitration panel.
Unified Hazardous Waste and Hazardous Materials Management Regulatory Program
e and Hazardous Materials Management Regulatory Program establishes a set of guidelines concerning all those who deal with, at some point, the management of hazardous materials.
La Follette Bill of 1986 (Risk Management Plan)
6 (Risk Management Plan) requires a Risk Management Plan be prepared for commercial operations which use hazardous materials.
South Coast Air Quality Management District Rule 1403
The South Coast Air Quality Management District Rule 1403 requires an AsbeNotification Form to be filled out by those who wish to demolish a building known to contain, or suspected of containing asbestos.
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Geology, Soils and Seismicity Baseline Technical Study - Draft
loss of life and property and protect the environment by mitigation of geologic hazards. ision include, but are not limited to, hazard
assessment, including identification and mapping of geologic hazards and estimates of their potential consequence to life, property, and the environment, and likelihood of occurrence.
responsible for information advisory services, emergency response to Projects
undergoing environmental review must fully address and mitigate impacts of geologic
3 provided emergency regulations for the California Hazardous Waste Control Program of 1972, by providing definitions of what is
rdous;” by creating a hazardous waste tracking program; and by reference center for public and private use for dealing with all aspects of
Tanner hazardous Waste Substances Account Act of 1981 created the Hazardous Substance Account and established a fee schedule on the land disposal of hazardous waste to cover the costs of remedial activities (site cleanup) and associated
nistrative costs, hazardous substance response equipment, health effects studies, and
Unified Hazardous Waste and Hazardous Materials Management Regulatory Program
e and Hazardous Materials Management Regulatory Program establishes a set of guidelines concerning all those who deal with, at some point, the
6 (Risk Management Plan) requires a Risk Management Plan be
stos Notification Form to be filled out by those who wish to demolish a building known to contain,
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2.3. LOCAL 2.3.1. City of Los Angeles The City of Los Angeles has implemented a general plandocument that outlines specific objectives and guidelines for future growthrequires each local government to adopt a local General Plan, which must contain at least seven “elements”, also referred to as chapters or topics:
• Land Use • Transportation • Housing • Conservation • Noise • Open Space • Safety • Optional A city-specific building code establishes minimum development and building standards safeguard the public’s safety and welfare. 2.3.1.1. General Plan The General Plan System for the City of Los AngelUse Element comprised of 35 community plans, twelve citywide elements which address various citywide topics, a Monitoring System, and an Annual Report on Growth and Infrastructure. The General Plan Framework Elemedevelopment policies by providing a comprehensive longThe Framework Element serves as subregional input to the Southern California Association of Governments Regional Comprehensive Plan and Guide and provides a context for cooperative planning efforts between the City of Los Angeles, adjacent cities, and the County of Los Angeles. The Framework Element, along with the Air Quality Element and the Transportation Element, ensures conformity between the Los Angeles City General Plan and the Regional Comprehensive Plan and Guide and the Regional Air Quality Management Plan. Comprehensive Plan and Guide include Growth Management and Mobility components.
Geology, Soils and Seismicity Baseline Technical Study
The City of Los Angeles has implemented a general plan, which is a long range policy that outlines specific objectives and guidelines for future growth. California law
requires each local government to adopt a local General Plan, which must contain at least seven “elements”, also referred to as chapters or topics:
establishes minimum development and building standards safeguard the public’s safety and welfare.
The General Plan System for the City of Los Angeles includes the Framework Element, a Land Use Element comprised of 35 community plans, twelve citywide elements which address various citywide topics, a Monitoring System, and an Annual Report on Growth and
The General Plan Framework Element is a guide for communities to implement growth and development policies by providing a comprehensive long-range view of the City as a whole. The Framework Element serves as subregional input to the Southern California Association of
Comprehensive Plan and Guide and provides a context for cooperative planning efforts between the City of Los Angeles, adjacent cities, and the County of Los
The Framework Element, along with the Air Quality Element and the Transportation , ensures conformity between the Los Angeles City General Plan and the Regional
Comprehensive Plan and Guide and the Regional Air Quality Management Plan. Comprehensive Plan and Guide include Growth Management and Mobility components.
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Geology, Soils and Seismicity Baseline Technical Study - Draft
, which is a long range policy California law
requires each local government to adopt a local General Plan, which must contain at least
establishes minimum development and building standards to
es includes the Framework Element, a Land Use Element comprised of 35 community plans, twelve citywide elements which address various citywide topics, a Monitoring System, and an Annual Report on Growth and
nt is a guide for communities to implement growth and range view of the City as a whole.
The Framework Element serves as subregional input to the Southern California Association of Comprehensive Plan and Guide and provides a context for cooperative
planning efforts between the City of Los Angeles, adjacent cities, and the County of Los The Framework Element, along with the Air Quality Element and the Transportation , ensures conformity between the Los Angeles City General Plan and the Regional
Comprehensive Plan and Guide and the Regional Air Quality Management Plan. The Regional Comprehensive Plan and Guide include Growth Management and Mobility components.
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
2.3.1.2. City Codes The proposed Project routing options for build alternatives are entirely within the City of Los Angeles. Accordingly, the City of Los Angeles will likely have jurisdiction over permits and/or approvals. The purpose of the building codes are to prosafeguard the public’s safety and welfare by regulating the design, construction, quality of materials, use, occupancy, location and maintenance of all dwellings, other structures, certain equipment and grading. Prior to issuancewill have to be prepared to address route specific geotechnical considerations. The City of Los Angeles has adopted the Los Angeles Building Code.Building Code adopts by reference portio Chapters 1 through 96 of the Los Angeles Building Code as published by the International Code Council are Divisions 1 through 96, respectively, of Article 1, Chapter IX, of the Los Angeles Municipal Code. For uniformitdivision and section numbers are stated in the published code. Angeles Building Code addresses grading permits.
2.3.2. City of Inglewood Although the proposed Project routing options foCity of Los Angeles, the City of Inglewood is located in the immediate vicinityInglewood’s General Plan is a long range policy document that sets forth goals, policies, and directions for the City’s growth. Code as its building code.
2.4. METHODOLOGY The existing geotechnical/subsurface/seismic conditions based on review of pertinent documents available inprepared by CGS, USGS, LAWA, reviewed. Existing surface conditions were observed in the field and by reviewing aerial photographs. Using this information, potential following CGS guidelines for geologic/seismic considerations in environmental impact reports (CDMG, 1986a) and current industry standards
Geology, Soils and Seismicity Baseline Technical Study
The proposed Project routing options for build alternatives are entirely within the City of Los Angeles. Accordingly, the City of Los Angeles will likely have jurisdiction over permits and/or approvals. The purpose of the building codes are to provide minimum standards to safeguard the public’s safety and welfare by regulating the design, construction, quality of materials, use, occupancy, location and maintenance of all dwellings, other structures, certain equipment and grading. Prior to issuance of a grading permit, geotechnical investigations will have to be prepared to address route specific geotechnical considerations.
The City of Los Angeles has adopted the Los Angeles Building Code. The Los Angeles Building Code adopts by reference portions of the California Building Code.
Chapters 1 through 96 of the Los Angeles Building Code as published by the International Code Council are Divisions 1 through 96, respectively, of Article 1, Chapter IX, of the Los
For uniformity with the California Building Code (CBC), only the division and section numbers are stated in the published code. Section 106 of the Los Angeles Building Code addresses grading permits.
Although the proposed Project routing options for build alternatives are entirely within the the City of Inglewood is located in the immediate vicinity.
Inglewood’s General Plan is a long range policy document that sets forth goals, policies, and ’s growth. The City of Inglewood has adopted the California Building
The existing geotechnical/subsurface/seismic conditions within the study areabased on review of pertinent documents available in the literature. Reports and maps
LAWA, City of Los Angeles, and others (see References) wxisting surface conditions were observed in the field and by reviewing aerial
photographs. Using this information, potential geologic hazards were identified by generally eologic/seismic considerations in environmental impact
(CDMG, 1986a) and current industry standards.
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Geology, Soils and Seismicity Baseline Technical Study - Draft
The proposed Project routing options for build alternatives are entirely within the City of Los Angeles. Accordingly, the City of Los Angeles will likely have jurisdiction over permits and/or
vide minimum standards to safeguard the public’s safety and welfare by regulating the design, construction, quality of materials, use, occupancy, location and maintenance of all dwellings, other structures, certain
of a grading permit, geotechnical investigations will have to be prepared to address route specific geotechnical considerations.
The Los Angeles
Chapters 1 through 96 of the Los Angeles Building Code as published by the International Code Council are Divisions 1 through 96, respectively, of Article 1, Chapter IX, of the Los
(CBC), only the Section 106 of the Los
r build alternatives are entirely within the The City of
Inglewood’s General Plan is a long range policy document that sets forth goals, policies, and The City of Inglewood has adopted the California Building
within the study area were evaluated and maps
see References) were xisting surface conditions were observed in the field and by reviewing aerial
geologic hazards were identified by generally eologic/seismic considerations in environmental impact
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
2.5. IMPACT THRESHOLDS 2.5.1. National Environmental According to the Council on Environmental Quality regulations (40 CRegulations Section 1500-1508), the determination of a significant impact is a function of both context and intensity. Context means that the significance of an action must be analyzed in several contexts such as society as a whole (human, national), the affected region, the affected interests and the locality. Both shortrefers to the severity of impact. To determine significance, the seexamined in terms of the type, quality and sensitivity of the resource involved; the location of the proposed project; the duration of the effect (shortof context. Adverse impacts will vsurrounding area. 2.5.2. California Environmental In accordance with Appendix G of the State CEQA Guidelines, the Metro Green Line to LAX Project would have a significant impact related to materials and mineral resources
• Expose people or structures to potential substantial adverse effects, including the risk of loss, injury, or death involving:○ Rupture of a known earthquake fault, as delineated oEarthquake Fault Zoning Map issued by the State Geologist for the area or based on other substantial evidence of a known fault;
○ Strong seismic ground shaking;
○ Seismic-related ground failure, including liquefaction;
○ Landslides.
• Result in substantial Result in substantial soil erosion or the loss of topsoil;• Be located on a geologic unit or soil that is unstable, or that would become unstable as a result of the project, and potentially result in onsubsidence, liquefaction or collapse;
• Be located on expansive soil, as defined in Table 18(1994), creating substantial risks to life or property;
• Have soils incapable of adequately supporting the use of water disposal systems where sewers are not available for the disposal of waste water
• Create a significant hazard to the public or the environment through the routine transport, use, or disposal of hazardous materials;
Geology, Soils and Seismicity Baseline Technical Study
nvironmental Policy Act
the Council on Environmental Quality regulations (40 Code of Federal 1508), the determination of a significant impact is a function of
both context and intensity. Context means that the significance of an action must be analyzed in several contexts such as society as a whole (human, national), the affected region, the
the locality. Both short- and long-term effects are relevant. Intensity refers to the severity of impact. To determine significance, the severity of the impact must be examined in terms of the type, quality and sensitivity of the resource involved; the location of the proposed project; the duration of the effect (short- or long-term) and other consideration of context. Adverse impacts will vary with the setting of the proposed action and the
nvironmental Quality Act
In accordance with Appendix G of the State CEQA Guidelines, the Metro Green Line to LAX Project would have a significant impact related to geology an soils, hazards and hazardous materials and mineral resources if it would:
Expose people or structures to potential substantial adverse effects, including the risk of loss, injury, or death involving: Rupture of a known earthquake fault, as delineated on the most recent AlquistEarthquake Fault Zoning Map issued by the State Geologist for the area or based on other substantial evidence of a known fault;
Strong seismic ground shaking;
related ground failure, including liquefaction; and
Result in substantial Result in substantial soil erosion or the loss of topsoil;
Be located on a geologic unit or soil that is unstable, or that would become unstable as a result of the project, and potentially result in on- or off-site landslide, lateral spreading, subsidence, liquefaction or collapse;
Be located on expansive soil, as defined in Table 18-1-B of the Uniform Building Code (1994), creating substantial risks to life or property;
Have soils incapable of adequately supporting the use of septic tanks or alternative waste water disposal systems where sewers are not available for the disposal of waste water
Create a significant hazard to the public or the environment through the routine transport, use, or disposal of hazardous materials;
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Geology, Soils and Seismicity Baseline Technical Study - Draft
ederal 1508), the determination of a significant impact is a function of
both context and intensity. Context means that the significance of an action must be analyzed in several contexts such as society as a whole (human, national), the affected region, the
term effects are relevant. Intensity verity of the impact must be
examined in terms of the type, quality and sensitivity of the resource involved; the location of term) and other consideration
ary with the setting of the proposed action and the
In accordance with Appendix G of the State CEQA Guidelines, the Metro Green Line to LAX an soils, hazards and hazardous
Expose people or structures to potential substantial adverse effects, including the risk of
n the most recent Alquist-Priolo Earthquake Fault Zoning Map issued by the State Geologist for the area or based on
Result in substantial Result in substantial soil erosion or the loss of topsoil;
Be located on a geologic unit or soil that is unstable, or that would become unstable as a lateral spreading,
B of the Uniform Building Code
septic tanks or alternative waste water disposal systems where sewers are not available for the disposal of waste water
Create a significant hazard to the public or the environment through the routine transport,
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
• Create a significant hazard to the public or the environment through reasonably foreseeable upset and accident conditions involving the release of hazardous materials into the environment;
• Emit hazardous emissions or handle hazardous or acutely hazardous matesubstances, or waste within one
• Be located on a site which is included on a list of hazardous materials sites compiled pursuant to Government Code Section 65962.5 and, as a result, would it create a significant hazard to the public or the environment;
• For a project located within an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project result in a safety hazard for people residing or working in the project area
• For a project within the vicinity of a private airstrip, would the project result in a safety hazard for people residing or working in the project area;
• Impair implementation of or physically interfere with plan or emergency evacuation plan;
• Expose people or structures to a significant risk of loss, injury or death involving wildland fires, including where wildlands are adjacent to urbanized areas or where residences are intermixed with wildlands;
• Have soils incapable of adequately supporting the use of septic tanks or alternative waste water disposal systems where sewers are not available for the disposal of waste water; and/or
• Result in the loss of availability of a locallydelineated on a local general plan, specific plan or other land use plan
Geology, Soils and Seismicity Baseline Technical Study
ate a significant hazard to the public or the environment through reasonably foreseeable upset and accident conditions involving the release of hazardous materials
Emit hazardous emissions or handle hazardous or acutely hazardous matesubstances, or waste within one-quarter mile of an existing or proposed school
Be located on a site which is included on a list of hazardous materials sites compiled pursuant to Government Code Section 65962.5 and, as a result, would it create a gnificant hazard to the public or the environment;
For a project located within an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project result
people residing or working in the project area;
For a project within the vicinity of a private airstrip, would the project result in a safety hazard for people residing or working in the project area;
Impair implementation of or physically interfere with an adopted emergency response plan or emergency evacuation plan;
Expose people or structures to a significant risk of loss, injury or death involving wildland fires, including where wildlands are adjacent to urbanized areas or where residences are
Have soils incapable of adequately supporting the use of septic tanks or alternative waste water disposal systems where sewers are not available for the disposal of waste water;
Result in the loss of availability of a locally-important mineral resource recovery site delineated on a local general plan, specific plan or other land use plan.
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Geology, Soils and Seismicity Baseline Technical Study - Draft
ate a significant hazard to the public or the environment through reasonably foreseeable upset and accident conditions involving the release of hazardous materials
Emit hazardous emissions or handle hazardous or acutely hazardous materials, quarter mile of an existing or proposed school;
Be located on a site which is included on a list of hazardous materials sites compiled pursuant to Government Code Section 65962.5 and, as a result, would it create a
For a project located within an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project result
For a project within the vicinity of a private airstrip, would the project result in a safety
an adopted emergency response
Expose people or structures to a significant risk of loss, injury or death involving wildland fires, including where wildlands are adjacent to urbanized areas or where residences are
Have soils incapable of adequately supporting the use of septic tanks or alternative waste water disposal systems where sewers are not available for the disposal of waste water;
rtant mineral resource recovery site
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3. AFFECTED ENVIRONMENT
3.1. REGIONAL PHYSIOGRAPHIC 3.1.1. Topography The Project routing options lie on the relatively levlocated on the northwestern margin of the Los Angeles Basin Physiographic province. The ground surface within the Project Study Areamean sea level (msl) on the east to Our review of the topographic maps for the (USGS, 1964) indicates local surfaceTopographically, the site is geneinto storm drain systems emptying into the Pacific Ocean located approximately 2 miles to the west of the Project Study Area 3.1.2. Geology The Project Study Area is located on the northwestern margiPhysiographic Province. The Los Angeles Basin, a structural trough, is a northwestalluviated lowland plain approximately 50 miles long and 20 miles wide. Mountains and hills that generally expose Late Cretaceous to Labound the Basin along the north(Santa Ana Mountains) and southeastthe Peninsular Ranges geomorphic province of California, is characterized primarily by four sub-parallel structural blocks, Northeastern, Northwestern, Southwestern and Central Blocks sliced longitudinally by young, steeply dipping northwestlocated at the northerly terminus of the Peninsular Ranges, is the site of active sedimentation and the strata is interpreted to be as much as 31,000 feet thick in the center of trough of the Central Block of the Los Angeles Basin. The northern portion of the Southwestern block of the Los Angeles Basin. Present structural relief of the basin resulted chiefly from upper Miocene to lodifferential sinking, local uplift, folding and faulting. through present time as evidenced by warped Quaternary strata, relative uplift and subsidence of highland and lowland areas and historical earthquakeZone as well as other regional faults within the basin.
Geology, Soils and Seismicity Baseline Technical Study
FFECTED ENVIRONMENT / EXISTING CONDITION
HYSIOGRAPHIC SETTING
lie on the relatively level, southeastward sloping Torrance plain located on the northwestern margin of the Los Angeles Basin Physiographic province. The
Project Study Area ranges from approximately Elevation +95 feet mean sea level (msl) on the east to Elevation +108 feet msl on the west.
topographic maps for the Venice and Inglewood 7.5-minute (USGS, 1964) indicates local surface-water sheet flow is generally toward the southTopographically, the site is generally level with sheet flow drainage over paved surfaces and into storm drain systems emptying into the Pacific Ocean located approximately 2 miles to
Project Study Area.
is located on the northwestern margin of the Los Angeles Basin The Los Angeles Basin, a structural trough, is a northwest
alluviated lowland plain approximately 50 miles long and 20 miles wide. Mountains and hills that generally expose Late Cretaceous to Late Pleistocene-age sedimentary and igneous rocks bound the Basin along the north (Santa Monica Mountains), northeast (Puente Hills)
and southeast (San Joaquin Hills) (Yerkes, 1965). The Basin, part of the Peninsular Ranges geomorphic province of California, is characterized primarily by four
parallel structural blocks, Northeastern, Northwestern, Southwestern and Central Blocks dinally by young, steeply dipping northwest-trending fault zones. The Basin,
located at the northerly terminus of the Peninsular Ranges, is the site of active sedimentation and the strata is interpreted to be as much as 31,000 feet thick in the center of trough of the Central Block of the Los Angeles Basin. The Project Study Area is within northern portion of the Southwestern block of the Los Angeles Basin.
Present structural relief of the basin resulted chiefly from upper Miocene to lodifferential sinking, local uplift, folding and faulting. Deformation of the basin continues through present time as evidenced by warped Quaternary strata, relative uplift and subsidence of highland and lowland areas and historical earthquakes along the Newport-Inglewood Fault Zone as well as other regional faults within the basin.
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Geology, Soils and Seismicity Baseline Technical Study - Draft
S
el, southeastward sloping Torrance plain located on the northwestern margin of the Los Angeles Basin Physiographic province. The
ranges from approximately Elevation +95 feet
minute quadrangles water sheet flow is generally toward the south-southeast.
rally level with sheet flow drainage over paved surfaces and into storm drain systems emptying into the Pacific Ocean located approximately 2 miles to
n of the Los Angeles Basin The Los Angeles Basin, a structural trough, is a northwest-trending
alluviated lowland plain approximately 50 miles long and 20 miles wide. Mountains and hills age sedimentary and igneous rocks
(Puente Hills), east (Yerkes, 1965). The Basin, part of
the Peninsular Ranges geomorphic province of California, is characterized primarily by four parallel structural blocks, Northeastern, Northwestern, Southwestern and Central Blocks
trending fault zones. The Basin, located at the northerly terminus of the Peninsular Ranges, is the site of active sedimentation and the strata is interpreted to be as much as 31,000 feet thick in the center of the synclinal
is within the
Present structural relief of the basin resulted chiefly from upper Miocene to lower Pliocene Deformation of the basin continues
through present time as evidenced by warped Quaternary strata, relative uplift and subsidence Inglewood Fault
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
3.2. LOCAL PHYSIOGRAPHIC S The Project Study Area lies within a subTorrance Plain, a coastal lowland area that hawashes that drain the highland areas to the north. underlain by artificial fill overlying marine and nongreyish brown to light brown, pebbly gravels, sands, silts and clay (Geologic Map). The Torrance Plain is overlain to the west by the inactive El Segundo Sandhills, which consist of a threedunes stretching along the Pacific coast from the Ballona Escarpment to the Palos Verdes Hills (USGS, 1956). The geologic material within the Sandartificial fill overlying unconsolidated, poorl
Figure
Source: CGS, 2010
Geology, Soils and Seismicity Baseline Technical Study
SETTING
lies within a sub-setting of the Los Angeles Basin known as the Torrance Plain, a coastal lowland area that has been elevated and dissected by streams and washes that drain the highland areas to the north. The Project Study Area is expected to be
overlying marine and non-marine sediments consisting of light n, pebbly gravels, sands, silts and clay (Figure 3.1.
The Torrance Plain is overlain to the west by the inactive El Segundo which consist of a three- to six-mile-wide belt of recent and older wind
dunes stretching along the Pacific coast from the Ballona Escarpment to the Palos Verdes The geologic material within the Sandhills is expected to consist of
artificial fill overlying unconsolidated, poorly graded, friable fine sands and occasional silt.
Figure 3.1. Regional Geologic Map
Page 12
Geology, Soils and Seismicity Baseline Technical Study - Draft
setting of the Los Angeles Basin known as the s been elevated and dissected by streams and
is expected to be marine sediments consisting of light
Regional The Torrance Plain is overlain to the west by the inactive El Segundo
ent and older wind-blown sand dunes stretching along the Pacific coast from the Ballona Escarpment to the Palos Verdes
hills is expected to consist of y graded, friable fine sands and occasional silt.
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
3.2.1. Geologic Structure Geologic structure of alluvial and windblown soils is anticipated to be generallyto massive; however, it can be interpreted that crossstratification, transverse bar-tabular crosssedimentary structures can exist at depth. Dependent upon comaterials, these sedimentary features 3.2.2. Groundwater The Project Study Area is located within the West Coast Groundwater Basincontained by the Ballona Escarpment to the north, the east, the Palos Verdes Hills to the south, and the Pacific Ocean to the westflow in the West Coast Groundwater Basin is primarily controlled by hydrologic properties of unconsolidated, permeable Quaternary sepermeable aquitards. Water bearing units and aquitards include the localized Semiperched Aquifer, the Upper and Lower Bellflower Aquitards, and the Gage Aquifer. The Gage Aquifer is underlain by the El Segundo Aquiclude and the Silverado Aquifer. Groundwater levels within the Project Study Areabelow ground surface (bgs). Groundwaterpumping practices. Zones of discthe Project Study Area, generally at depths of approximately 20 to 60 feet bgs. The Gage Aquifer is unconfined and encountered at approximately 100 to 110 feet bgs. The general flow direction is toward the southeast. The underlying El Segundo Aquiclude is estimated to be 40 to 100 feet thick, followed by the Silverado Aquifer located within the San Pedro Formation, which ranges from 100 to 500 feet thick. In the Project Study Area, west of the Gardena syncline, the El Segundo Aquitard is discontinuous, allowing the Gage Aquifer to merge with and become indistinguishable from the Silverado Aquifer. Regional groundwater flow in the West Coast Basin is generally westward towards the Pacific Ocean. However, groundwater historical dewatering of the freshwater aquifers. Tinitiated to control saltwater intrusionof freshwater injection wells installed groundwater generally flows westerly and is considered to be Sepulveda Boulevard, groundwaterinjection. The area east of Sepulvedathrough the City of Los Angeles and the Dominguez Channel. There are Study Area, as groundwater beneath
Geology, Soils and Seismicity Baseline Technical Study
Geologic structure of alluvial and windblown soils is anticipated to be generallyto massive; however, it can be interpreted that cross-stratification, channel trough cross
tabular cross-stratification, thin bedding and laminated sedimentary structures can exist at depth. Dependent upon composition of geologic materials, these sedimentary features have the potential to perch groundwater.
located within the West Coast Groundwater Basin, which is contained by the Ballona Escarpment to the north, the Newport-Inglewood fault zone east, the Palos Verdes Hills to the south, and the Pacific Ocean to the west. Groundwater flow in the West Coast Groundwater Basin is primarily controlled by hydrologic properties of unconsolidated, permeable Quaternary sediments that are partially separated by less
. Water bearing units and aquitards include the localized Semiperched Aquifer, the Upper and Lower Bellflower Aquitards, and the Gage Aquifer. The Gage Aquifer is
Aquiclude and the Silverado Aquifer.
Project Study Area have historically been deeperroundwater depths can vary by season and in response todiscontinuous perched groundwater may be encountered within
, generally at depths of approximately 20 to 60 feet bgs.
The Gage Aquifer is unconfined and encountered at approximately 100 to 110 feet bgs. The oward the southeast. The underlying El Segundo Aquiclude is
estimated to be 40 to 100 feet thick, followed by the Silverado Aquifer located within the San Pedro Formation, which ranges from 100 to 500 feet thick. In the Project Study Area, west of
rdena syncline, the El Segundo Aquitard is discontinuous, allowing the Gage Aquifer to merge with and become indistinguishable from the Silverado Aquifer.
Regional groundwater flow in the West Coast Basin is generally westward towards the Pacific However, groundwater near LAX has been affected by saltwater intrusion
of the freshwater aquifers. The West Coast Basin Barrier Project was initiated to control saltwater intrusion by creating a groundwater barrier consistinof freshwater injection wells installed parallel to the coast. West of Sepulveda Boulevard
flows westerly and is considered to be of a brackish quality. ESepulveda Boulevard, groundwater generally flows to the east as a result of freshwater
The area east of Sepulveda Boulevard is located in drainage sub-basinCity of Los Angeles and the Los Angeles County Public Works storm drains to the
. There are no public drinking water wells located within the roundwater beneath it is not potable (i.e. pure enough for consumption).
Page 13
Geology, Soils and Seismicity Baseline Technical Study - Draft
Geologic structure of alluvial and windblown soils is anticipated to be generally thickly bedded stratification, channel trough cross-
stratification, thin bedding and laminated mposition of geologic
potential to perch groundwater.
which is Inglewood fault zone to the
Groundwater flow in the West Coast Groundwater Basin is primarily controlled by hydrologic properties of
diments that are partially separated by less . Water bearing units and aquitards include the localized Semiperched
Aquifer, the Upper and Lower Bellflower Aquitards, and the Gage Aquifer. The Gage Aquifer is
deeper than 40 feet by season and in response to local
perched groundwater may be encountered within , generally at depths of approximately 20 to 60 feet bgs.
The Gage Aquifer is unconfined and encountered at approximately 100 to 110 feet bgs. The oward the southeast. The underlying El Segundo Aquiclude is
estimated to be 40 to 100 feet thick, followed by the Silverado Aquifer located within the San Pedro Formation, which ranges from 100 to 500 feet thick. In the Project Study Area, west of
rdena syncline, the El Segundo Aquitard is discontinuous, allowing the Gage Aquifer to
Regional groundwater flow in the West Coast Basin is generally westward towards the Pacific affected by saltwater intrusion due to he West Coast Basin Barrier Project was
by creating a groundwater barrier consisting of a series est of Sepulveda Boulevard,
quality. East of as a result of freshwater
basins that flows Los Angeles County Public Works storm drains to the drinking water wells located within the Project potable (i.e. pure enough for consumption).
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
Numerous existing groundwater monitoring vicinity are identified in Camp, Dr
3.3. FAULTS AND SEISMICITY 3.3.1. General The primary seismic hazards for sites in the region include strong ground shaking and surface fault rupture. Leighton’s discussion of faults potentially impacting the site is prefaced with a discussion of California legislation and state policies concerning the classification and landuse criteria associated with faults. had surface displacement within Holocene Tis used in delineating Earthquake Fault Zones (EFZ) as mandated by the AlquistEarthquake Faulting Zones Act of 1972 and as most recently revised in 2007 (Hart and Bryant, 2007). The intent of this act is to ensure tnot sited across the traces of active faults. Based on our review, the do not traverse an EFZ (CGS, 2000). A Regional Fault Map (Figure 3.to major regional faults. The closest activethe Newport-Inglewood Fault Zone (NIFZ)northwest-trending, approximately 2disrupting early Holocene to Late Pleistoceneseismic evidence that the zone is tectonically active; thus, the surrounding metropolitan area is subject to certain seismic risksbeen associated with the NIFZ since 1920 (Barrows, 1974). The proposed Project routing optionsSepulveda Boulevard (Jennings, 1977). The Charnock fault is an inferred fault paralleling the trend of the Newport Inglewood Fault Zone (NIFZ). The Charnock fault fails to displace the “50-foot gravel” of the Ballona Gap (Poland et al., 1959), but is depicted as cutting Pleistocene (11,000 to 180,000 years ago) deposits. The fault has not been observed at the surface, therefore its trace should be considered approximate. The Charnock fault is probably Pre-Holocene (11,000 years BP) and, thus, does not meet thefault based on currently available information.
1 Anticlinal folds are folds in a rock body from which the strata dip away in opposite directions. The core of the folds contain the oldest rocks, which convex upwards
Geology, Soils and Seismicity Baseline Technical Study
groundwater monitoring wells within the study area and immediate identified in Camp, Dresser & McKee, Inc. (2001).
he primary seismic hazards for sites in the region include strong ground shaking and surface discussion of faults potentially impacting the site is prefaced with a
scussion of California legislation and state policies concerning the classification and landuse criteria associated with faults. By definition of the CGS, an active fault is a fault which has
within Holocene Time (about the last 11,000 years). This definition is used in delineating Earthquake Fault Zones (EFZ) as mandated by the AlquistEarthquake Faulting Zones Act of 1972 and as most recently revised in 2007 (Hart and Bryant, 2007). The intent of this act is to ensure that urban development and habitable structures are not sited across the traces of active faults. Based on our review, the Project routing options
an EFZ (CGS, 2000).
.2.) is attached to illustrate the proximity of the The closest active-zoned faults are is the Compton Thrust fault andFault Zone (NIFZ). The NIFZ, an Alquist-Priolo Fault Zone,
pproximately 2- to 4-mile wide belt of anticlinal folds1 and faults disrupting early Holocene to Late Pleistocene-age and older deposits. There is abundant seismic evidence that the zone is tectonically active; thus, the surrounding metropolitan area ubject to certain seismic risks. At least five earthquakes of magnitude 4.9 or larger have
been associated with the NIFZ since 1920 (Barrows, 1974).
routing options cross a mapped trace of the Charnock fault east of rd (Jennings, 1977). The Charnock fault is an inferred fault paralleling the
trend of the Newport Inglewood Fault Zone (NIFZ). The Charnock fault fails to displace the foot gravel” of the Ballona Gap (Poland et al., 1959), but is depicted as cutting
Pleistocene (11,000 to 180,000 years ago) deposits. The fault has not been observed at the surface, therefore its trace should be considered approximate. The Charnock fault is probably Holocene (11,000 years BP) and, thus, does not meet the State’s definition of an active
fault based on currently available information.
1 Anticlinal folds are folds in a rock body from which the strata dip away in opposite directions. The core of the which convex upwards
Page 14
Geology, Soils and Seismicity Baseline Technical Study - Draft
wells within the study area and immediate
he primary seismic hazards for sites in the region include strong ground shaking and surface discussion of faults potentially impacting the site is prefaced with a
scussion of California legislation and state policies concerning the classification and land-By definition of the CGS, an active fault is a fault which has
11,000 years). This definition is used in delineating Earthquake Fault Zones (EFZ) as mandated by the Alquist-Priolo Earthquake Faulting Zones Act of 1972 and as most recently revised in 2007 (Hart and Bryant,
hat urban development and habitable structures are routing options
d to illustrate the proximity of the routing options s are is the Compton Thrust fault and
Priolo Fault Zone, is a and faults
age and older deposits. There is abundant seismic evidence that the zone is tectonically active; thus, the surrounding metropolitan area
At least five earthquakes of magnitude 4.9 or larger have
cross a mapped trace of the Charnock fault east of rd (Jennings, 1977). The Charnock fault is an inferred fault paralleling the
trend of the Newport Inglewood Fault Zone (NIFZ). The Charnock fault fails to displace the foot gravel” of the Ballona Gap (Poland et al., 1959), but is depicted as cutting the upper
Pleistocene (11,000 to 180,000 years ago) deposits. The fault has not been observed at the surface, therefore its trace should be considered approximate. The Charnock fault is probably
tate’s definition of an active
1 Anticlinal folds are folds in a rock body from which the strata dip away in opposite directions. The core of the
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
Sources: Esri, 2012; CGS, 2010; CGS, 2002
To properly evaluate potential seismic hazards, trouting options (western end, center, and eastern end) were selected for analysis (benchmark locations on Figure 3.2, Regional Fault Map).proximity and seismic ground motion hazard are similar for the three benchmark locations. For simplicity, only results for the central benchmark are presented. Regional faults within approximately 100 kilometers location (Sepulveda Boulevard) are summarized in the table below.on the statewide probabilistic seismic hazard assessment and the subsequent (CGS, 2003).
Geology, Soils and Seismicity Baseline Technical Study
Figure 3.2. Regional Fault Map
s: Esri, 2012; CGS, 2010; CGS, 2002
To properly evaluate potential seismic hazards, three specific locations within the Project routing options (western end, center, and eastern end) were selected for analysis (benchmark
, Regional Fault Map).The results of our evaluation indicate that faultseismic ground motion hazard are similar for the three benchmark locations.
For simplicity, only results for the central benchmark are presented.
Regional faults within approximately 100 kilometers (62 miles) from the central benchmark considered capable of producing significant seismic shaking
below. The slip rates and maximum magnitude events are based on the statewide probabilistic seismic hazard assessment and the subsequent
Page 15
Geology, Soils and Seismicity Baseline Technical Study - Draft
hree specific locations within the Project routing options (western end, center, and eastern end) were selected for analysis (benchmark
The results of our evaluation indicate that fault seismic ground motion hazard are similar for the three benchmark locations.
the central benchmark considered capable of producing significant seismic shaking
The slip rates and maximum magnitude events are based on the statewide probabilistic seismic hazard assessment and the subsequent update report
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
Table 3.1, Active Faults, is a summary of active faults, the approximate distance to thebenchmark location, the maximuestimated site intensity.
Sepulveda Boulevard (N33.9444° and W-118.3961) Abbreviated Fault Name
COMPTON THRUST
NEWPORT-INGLEWOOD (L.A.Basin)
PALOS VERDES
SANTA MONICA
MALIBU COAST
HOLLYWOOD
ELYSIAN PARK THRUST
RAYMOND
ANACAPA-DUME
NORTHRIDGE (E. Oak Ridge)
VERDUGO
WHITTIER
SIERRA MADRE
SIERRA MADRE (San Fernando)
SAN GABRIEL
SANTA SUSANA
CLAMSHELL-SAWPIT
SAN JOSE
HOLSER
SIMI-SANTA ROSA
OAK RIDGE (Onshore)
CHINO-CENTRAL AVE. (Elsinore)
NEWPORT-INGLEWOOD (Offshore)
CUCAMONGA
SAN CAYETANO
ELSINORE-GLEN IVY
Geology, Soils and Seismicity Baseline Technical Study
is a summary of active faults, the approximate distance to thelocation, the maximum earthquake magnitude, peak site acceleration, and
Table 3.1. Active Faults
Approximate Distance from
Routing Options
miles (km)
Estimated Maximum Earthquake Event
Maximum Earthquake Magnitude
(Mw)
Peak Site Acceleration (g)
4.7 6.8 0.524
5.0 6.9 0.411
5.2 7.1 0.426
9.3 6.6 0.296
10.3 6.7 0.282
10.4 6.4 0.235
12.6 6.7 0.227
16.2 6.5 0.146
18.5 7.3 0.212
19.4 6.9 0.154
19.4 6.7 0.134
21.9 6.8 0.114
23.4 7.0 0.131
25.2 6.7 0.095
26.7 7.0 0.106
27.5 6.6 0.078
28.0 6.5 0.071
30.3 6.5 0.064
31.9 6.5 0.059
33.9 6.7 0.063
34.7 6.9 0.072
35.2 6.7 0.060
36.9 6.9 0.065
40.1 7.0 0.063
41.1 6.8 0.052
44.0 6.8 0.048
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Geology, Soils and Seismicity Baseline Technical Study - Draft
is a summary of active faults, the approximate distance to the m earthquake magnitude, peak site acceleration, and
Estimated Maximum Earthquake Event
Estimated Site
Intensity (Modified Mercalli)
X
X
X
IX
IX
IX
IX
VIII
VIII
VIII
VIII
VII
VIII
VII
VII
VII
VI
VI
VI
VI
VI
VI
VI
VI
VI
VI
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
Sepulveda Boulevard (N33.9444° and W-118.3961) Abbreviated Fault Name
SAN ANDREAS - 1857 Rupture
SAN ANDREAS - Mojave
OAK RIDGE(Blind Thrust Offshore)
CHANNEL IS. THRUST (Eastern)
VENTURA - PITAS POINT
SANTA YNEZ (East)
SAN ANDREAS - Carrizo
CORONADO BANK
MONTALVO-OAK RIDGE TREND
SAN JACINTO-SAN BERNARDINO
SAN ANDREAS - San Bernardino
SAN ANDREAS - Southern
M.RIDGE-ARROYO PARIDA-SANTA ANA
CLEGHORN
RED MOUNTAIN
ELSINORE-TEMECULA
SANTA CRUZ ISLAND
SAN JACINTO-SAN JACINTO VALLEY
GARLOCK (West)
PLEITO THRUST
BIG PINE
NORTH FRONTAL FAULT ZONE (West)
ROSE CANYON
NORTH CHANNEL SLOPE
SANTA YNEZ (West)
WHITE WOLF
HELENDALE - S. LOCKHARDT
SAN JACINTO-ANZA
SANTA ROSA ISLAND
Geology, Soils and Seismicity Baseline Technical Study
Approximate Distance from
Routing Options
miles (km)
Estimated Maximum Earthquake Event
Maximum Earthquake Magnitude
(Mw)
Peak Site Acceleration (g)
44.9 7.8 0.110
44.9 7.1 0.060
48.6 6.9 0.045
50.0 7.4 0.064
51.3 6.8 0.038
52.4 7.0 0.045
52.7 7.2 0.054
53.9 7.4 0.062
54.8 6.6 0.030
55.0 6.7 0.033
55.8 7.3 0.055
55.8 7.4 0.060
58.1 6.7 0.030
59.2 6.5 0.025
60.8 6.8 0.030
63.6 6.8 0.030
64.2 6.8 0.028
SAN JACINTO VALLEY 66.7 6.9 0.030
67.7 7.1 0.036
68.2 7.2 0.035
69.4 6.7 0.024
69.7 7.0 0.029
79.2 6.9 0.024
79.3 7.1 0.026
80.3 6.9 0.024
82.4 7.2 0.027
84.5 7.1 0.027
86.0 7.2 0.028
86.7 6.9 0.020
Page 17
Geology, Soils and Seismicity Baseline Technical Study - Draft
Estimated Maximum Earthquake Event
Estimated Site
Intensity (Modified Mercalli)
VII
VI
VI
VI
V
VI
VI
VI
V
V
VI
VI
V
V
V
V
V
V
V
V
V
V
V
V
IV
V
V
V
IV
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
Sepulveda Boulevard (N33.9444° and W-118.3961) Abbreviated Fault Name
ELSINORE-JULIAN
NORTH FRONTAL FAULT ZONE (East)
LENWOOD-LOCKHART-OLD WOMAN SPRGS
GARLOCK (East)
PINTO MOUNTAIN
Source: EQFAULT (Blake, 2000) Note: Peak Site Acceleration based on Sadigh et al. (1997)
3.4. GROUND SHAKING Seismic hazards that could affect the earthquake occurring along one of several major active faults in the region. The magnitude of ground shaking is generally characterized by using the Peak Horizontal Ground Acceleration (PHGA). To take into consideratiomotion study was performed using the computer program EZEngineering, Inc., 2011) to estimate ground motion parameters for the site and the results are shown in Table 3.2, Ground Motion Study Results
Table
Event
Most Probable Event (MPE)
Operating Design Earthqua
Design Basis Earthquake (DBE)
Upper-Bound Earthquake (UBE)
Maximum Design Earthquake (MDE)
Maximum Considered Earthquake (MCE)
Source: Risk Engineering, Inc., 2011Note: Using an average of three NGA attenuation relationships.
The average of three different Next Generation Attenuation (NGA) relationships by Boore and Atkinson (2008), Campbell and Bozorgnia (2008) and Chiou and Youngs (2007the analysis. The results of the analysis suggest that the PHGA, with
Geology, Soils and Seismicity Baseline Technical Study
Approximate Distance from
Routing Options
miles (km)
Estimated Maximum Earthquake Event
Maximum Earthquake Magnitude
(Mw)
Peak Site Acceleration (g)
88.5 7.1 0.025
93.3 6.7 0.015
93.5 7.3 0.028
95.1 7.3 0.027
96.3 7.0 0.021
Peak Site Acceleration based on Sadigh et al. (1997)
Seismic hazards that could affect the routing option include ground shaking resulting from an earthquake occurring along one of several major active faults in the region. The magnitude of ground shaking is generally characterized by using the Peak Horizontal Ground Acceleration (PHGA). To take into consideration the impact of regional faults, a site-specific ground motion study was performed using the computer program EZ-FRISK Version 7.
) to estimate ground motion parameters for the site and the results are , Ground Motion Study Results.
Table 3.2. Ground Motion Study Results
Average Return Period
Sepulveda Boulevard
Most Probable Event (MPE) 72 years
Operating Design Earthquake (ODE) 200 years
Design Basis Earthquake (DBE) 475 years
Bound Earthquake (UBE) 949 years
Maximum Design Earthquake (MDE) 2,000 years
Maximum Considered Earthquake (MCE) 2,475 years
: Risk Engineering, Inc., 2011 Note: Using an average of three NGA attenuation relationships.
different Next Generation Attenuation (NGA) relationships by Boore and Atkinson (2008), Campbell and Bozorgnia (2008) and Chiou and Youngs (2007
s. The results of the analysis suggest that the PHGA, with a 10 percent probability
Page 18
Geology, Soils and Seismicity Baseline Technical Study - Draft
Estimated Maximum Earthquake Event
Estimated Site
Intensity (Modified Mercalli)
V
IV
V
V
IV
de ground shaking resulting from an earthquake occurring along one of several major active faults in the region. The magnitude of ground shaking is generally characterized by using the Peak Horizontal Ground Acceleration
specific ground FRISK Version 7.62 (Risk
) to estimate ground motion parameters for the site and the results are
Sepulveda Boulevard
0.20
0.30
0.40
0.49
0.58
0.61
different Next Generation Attenuation (NGA) relationships by Boore and Atkinson (2008), Campbell and Bozorgnia (2008) and Chiou and Youngs (2007) were used in
a 10 percent probability
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
of exceedance in 50 years (recurrence interval of 475 years), is in the order of approximately 0.40g to 0.41g. This level of ground motion is considered the Design Basis (DBE). The PHGA, with a 10 percent probability of exceedance in 100 years (recurrence interval of 949 years), is in the order of approximately 0.49gconsidered the Upper-Bound Earthquake (UBE). The design criteria set by Metrorequires that for important structures, such as those comprising the proposed project, special earthquake protection criteria be followedfor the Metro Rail projects includes maintaining public safety during and after a Maximum Design Earthquake (MDE), and alsooperation during and after an Operating Design Earthquake (ODE). the earthquake event with a 40 percent probability of exceedance in 100 years, which corresponds to an average recurrence interval of 200 years. Such an event can reasonably be expected to occur during the 100earthquake event with a 5 percent probability ofto an average recurrence interval of 2,000 years. Other design criteria for the seismic design of the proposed project are the Most ProbEvent (MPE) and the Maximum Considered Earthquake (MCE). The MPE is defined as the earthquake event with a 50 percent probability of exceedance in 50 years, which corresponds to an average recurrence interval of approximately 75 years. The MCE is deearthquake event with a 2 percent probability of exceedance in 50 years, which corresponds to an average recurrence interval of approximately 2,500 years. The 2010 California Building Code (CBC) uses the MCE as the basis for seismic design reoverview of regional historical seismicity see
Geology, Soils and Seismicity Baseline Technical Study
of exceedance in 50 years (recurrence interval of 475 years), is in the order of approximately . This level of ground motion is considered the Design Basis Earthquake PHGA, with a 10 percent probability of exceedance in 100 years (recurrence
the order of approximately 0.49g. This level of ground motion is Bound Earthquake (UBE).
teria set by Metro (Rail and Transit Design Criteria and Standards, 1996) requires that for important structures, such as those comprising the proposed project, special earthquake protection criteria be followed. The driving philosophy behind earthquake de
includes maintaining public safety during and after a Maximum Design Earthquake (MDE), and also imparting confidence in the overall system’s continued operation during and after an Operating Design Earthquake (ODE). The ODE is defined as the earthquake event with a 40 percent probability of exceedance in 100 years, which corresponds to an average recurrence interval of 200 years. Such an event can reasonably be expected to occur during the 100-year facility design life. The MDE is defined as the earthquake event with a 5 percent probability of exceedance in 100 years, which corresponds to an average recurrence interval of 2,000 years.
Other design criteria for the seismic design of the proposed project are the Most ProbEvent (MPE) and the Maximum Considered Earthquake (MCE). The MPE is defined as the earthquake event with a 50 percent probability of exceedance in 50 years, which corresponds to an average recurrence interval of approximately 75 years. The MCE is defined as the earthquake event with a 2 percent probability of exceedance in 50 years, which corresponds to an average recurrence interval of approximately 2,500 years. The 2010 California Building Code (CBC) uses the MCE as the basis for seismic design requirements. For a general overview of regional historical seismicity see Figure 3.3, Historical Seismicity Map
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Geology, Soils and Seismicity Baseline Technical Study - Draft
of exceedance in 50 years (recurrence interval of 475 years), is in the order of approximately Earthquake
PHGA, with a 10 percent probability of exceedance in 100 years (recurrence . This level of ground motion is
(Rail and Transit Design Criteria and Standards, 1996) requires that for important structures, such as those comprising the proposed project, special
. The driving philosophy behind earthquake design includes maintaining public safety during and after a Maximum
confidence in the overall system’s continued E is defined as
the earthquake event with a 40 percent probability of exceedance in 100 years, which corresponds to an average recurrence interval of 200 years. Such an event can reasonably be
he MDE is defined as the exceedance in 100 years, which corresponds
Other design criteria for the seismic design of the proposed project are the Most Probable Event (MPE) and the Maximum Considered Earthquake (MCE). The MPE is defined as the earthquake event with a 50 percent probability of exceedance in 50 years, which corresponds
fined as the earthquake event with a 2 percent probability of exceedance in 50 years, which corresponds to an average recurrence interval of approximately 2,500 years. The 2010 California Building
For a general Historical Seismicity Map.
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
Figure
Sources: Esri, 2012; USGS, 2011
3.5. LIQUEFACTION Liquefaction is the loss of soil strength or stiffness due to a build up of poreduring severe ground shaking. Liquefaction is associated primarily with loose (low density), saturated, fine- to medium-grained, cohesioninclude sand boils, excessive settlement, bearing capacity failures, and lateral spreading. A review of the Seismic Hazard Zones Map for the Inglewood, and Venice 7.5 Minute Quadrangles (CDMG, 1999) indicates tidentified as being susceptible to liquefaction, as depicted onMap, Seismic Hazards Zone Map.
Geology, Soils and Seismicity Baseline Technical Study
Figure 3.3. Historical Seismicity Map
Liquefaction is the loss of soil strength or stiffness due to a build up of pore-water pressure during severe ground shaking. Liquefaction is associated primarily with loose (low density),
grained, cohesion-less soils. Effects of severe liquefaction can include sand boils, excessive settlement, bearing capacity failures, and lateral spreading.
A review of the Seismic Hazard Zones Map for the Inglewood, and Venice 7.5 Minute Quadrangles (CDMG, 1999) indicates that the routing option is not located in an area identified as being susceptible to liquefaction, as depicted on Figure 3.4. Seismic Hazard
Hazards Zone Map.
Page 20
Geology, Soils and Seismicity Baseline Technical Study - Draft
water pressure during severe ground shaking. Liquefaction is associated primarily with loose (low density),
s soils. Effects of severe liquefaction can include sand boils, excessive settlement, bearing capacity failures, and lateral spreading.
A review of the Seismic Hazard Zones Map for the Inglewood, and Venice 7.5 Minute is not located in an area
. Seismic Hazard
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
Figure
Sources: Esri, 2012; CGS, 2003
3.6. SEISMICALLY-INDUCED S Seismically-induced settlement consists of dry dynamic settlement (above groundwater) and liquefaction-induced settlement (below groundwater). These settlements occuwithin loose to moderately dense sandy soil, due to a reduction in volume during and shortly after an earthquake event. Much of the artificial fill along the proposed Also, substantial portions of the sandy alluvium within the El Segundo Sand Hills along the routing option are anticipated to be loose or medium dense. Accordingly, the proposed routing option is deemed susceptible to seismically
Geology, Soils and Seismicity Baseline Technical Study
Figure 3.4. Seismic Hazard Map
SETTLEMENT
induced settlement consists of dry dynamic settlement (above groundwater) and induced settlement (below groundwater). These settlements occu
within loose to moderately dense sandy soil, due to a reduction in volume during and shortly
Much of the artificial fill along the proposed routing option is expected to be uncertified. the sandy alluvium within the El Segundo Sand Hills along the
are anticipated to be loose or medium dense. Accordingly, the proposed is deemed susceptible to seismically-induced settlement.
Page 21
Geology, Soils and Seismicity Baseline Technical Study - Draft
induced settlement consists of dry dynamic settlement (above groundwater) and induced settlement (below groundwater). These settlements occur primarily
within loose to moderately dense sandy soil, due to a reduction in volume during and shortly
is expected to be uncertified. the sandy alluvium within the El Segundo Sand Hills along the
are anticipated to be loose or medium dense. Accordingly, the proposed
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
3.7. LANDSLIDES According to the Los Angeles County Seismic Safety Element (1990) and the City of Los Angeles Safety Element (1996), the having a potential for slope instability. Additionally, the within an area identified as having a potential for seismic slope instability (CDMG, 1999). There are no known landslides near the proposed path of any known or potential landslides.flat; therefore, the potential of landslides is considered low.
3.8. HAZARDOUS MATERIALS
3.8.1. Urban Contamination Throughout the Project Study Area, the routing optionsindustrial and commercial propertiesinternational airport facility. Due to the nature of the activities that occur at these facilities/businesses, the potential for encountering preduring any construction project, particularly within an urban areaidentifies historical and current facilities/property uses and related environmental issues can potentially affect construction activities Classification criteria used to identify the potential impacts of propertStudy Area are as follows:
• High: Facilities with known or along the routing options (i.e.undocumented and the contamination is known or suspected to exist on the site
• Moderate: On-site facilities generators), or sites that have residual contaminsubject to remediation efforts. Facilities where upgroundwater contamination Area are classified as Moderate. background that typically useare also classified as Moderate
• Low: Facilities that completed remediation, have not reported releases of hazardous substances, or have historically utilized only small amounts of known contaminants (i.esmall quantity generators) and are unlikely to negatively affect the
Properties identified to present a high risk to the Project 3.3, High Priority Environmental Concern Sites Priority/Concern.
Geology, Soils and Seismicity Baseline Technical Study
Angeles County Seismic Safety Element (1990) and the City of Los Angeles Safety Element (1996), the Project Study Area is not within an area identified as having a potential for slope instability. Additionally, the Project Study Area is not located
an area identified as having a potential for seismic slope instability (CDMG, 1999). There are no known landslides near the proposed Project routing options, nor are they in the path of any known or potential landslides. The topography of the routing option flat; therefore, the potential of landslides is considered low.
ATERIALS
Throughout the Project Study Area, the routing options traverse urbanized areas with properties, parking lots, gasoline stations, open space, and an . Due to the nature of the activities that occur at these
he potential for encountering pre-existing hazardous waste material ect, particularly within an urban area, is possible.
historical and current facilities/property uses and related environmental issues affect construction activities in the Project Study Area.
to identify the potential impacts of properties located within the Project
acilities with known or highly probable soil/groundwater contamination(i.e., LUSTs and facilities where remediation is incomplete or
undocumented and the contamination is known or suspected to exist on the site
site facilities with potential soil contamination (i.e., USTs, largesites that have residual contamination from releases that may have been
subject to remediation efforts. Facilities where up-gradient, offsite properties have groundwater contamination that has the potential to migrate beneath the Project Study Area are classified as Moderate. Facilities with a heavy industrial/manufacturing background that typically use, or have used, significant quantities of hazardous materials
as Moderate.
acilities that completed remediation, have not reported releases of hazardous nces, or have historically utilized only small amounts of known contaminants (i.e
small quantity generators) and are unlikely to negatively affect the Project Study Area
Properties identified to present a high risk to the Project Study Area are present, High Priority Environmental Concern Sites and Figure 3.5, Environmental Sites of High
Page 22
Geology, Soils and Seismicity Baseline Technical Study - Draft
Angeles County Seismic Safety Element (1990) and the City of Los is not within an area identified as
is not located an area identified as having a potential for seismic slope instability (CDMG, 1999).
, nor are they in the tion is relatively
urbanized areas with ng lots, gasoline stations, open space, and an
. Due to the nature of the activities that occur at these existing hazardous waste material
possible. This report historical and current facilities/property uses and related environmental issues that
located within the Project
probable soil/groundwater contamination located ere remediation is incomplete or
undocumented and the contamination is known or suspected to exist on the site).
, large-quantity ation from releases that may have been gradient, offsite properties have
that has the potential to migrate beneath the Project Study with a heavy industrial/manufacturing significant quantities of hazardous materials
acilities that completed remediation, have not reported releases of hazardous nces, or have historically utilized only small amounts of known contaminants (i.e.
Project Study Area.
are presented in Table Environmental Sites of High
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
Table 3.3. High Priority Environment
Map ID
Database Type Site Name
1 CERCLIS, RCRAGN, UST, HWMAN
Transportation Security Administration at LAX
3 OTHER, RCRAGN, UST
Regency Development Corp.
4 LUST, RCRAGN, ERNS, UST, HWMAN
Budget Rent
9 LUST, UST, RCRAGN LAFD – 95
10 LUST, SPILLS, UST, ERNS, RCRAGN, HWMAN
LAX Fuel
23 ERNS LAX Fuel Corp.
40 WDS (identified on Geotracker), UST
Skyview Center
45 LUST, UST, HWMAN Resort Rent A Car
54 SPILLS, LUST, UST Delta Airlines
62 LUST, UST, ERNS, RCRAGN, HWMAN
LAX Terminal 1
64 ERNS LAX Fuel Corp.
67 LUST, HWMAN LAX Terminal 6
68 LUST Avis Car Rental
69 LUST King Delivery Inc(Dollar parking lot)
70 SPILLS Honeywell International Corp.
Note: Database Type in bold typeface indicates a release to soil and/or groundwater that is not a closed case or an ERNS release that may have been a large quantity a
Geology, Soils and Seismicity Baseline Technical Study
. High Priority Environmental Concern Sites
Site Name Address Los Angeles, 90045
Finding
Transportation Security Administration at LAX
5757 W Century Blvd.
• Discovery 11/25/2008, prescreening 8/31/2010
Regency Development Corp.
9700 Bellanca Ave. • LA County Site Mitigation ListStatus not reported
Budget Rent-A-Car 9775 Airport Blvd. • Open – Remediation
– Fire Station 10010 International Rd.
• Gasoline release to soil• Open – Verification Monitoring
LAX Fuel 1 World Way • Spills: Release of other solvent or non-petroleum hydrocarbon to groundwater
• Open – Remediation• LUST 1: Diesel release to soil • Case Closed • LUST 2: Hydrocarbon release • Open – Remedial Action
LAX Fuel Corp. 96th St. & Sepulveda Blvd.
• Smell reported from sewer, truck sent to cleanup; however source of leak unclear
Skyview Center 6053 Century Blvd. • Ozone injection to mitigate diesel compounds to soil
• Open Resort Rent A Car 6151 98th St. • Release of diesel to soil
• Open – Site AssessmentDelta Airlines 6150 W Century
Blvd. • Spills 1 – No Furthe• Spills 2 – Release of solvents to groundwater
• Open – Verification MonitoringLAX Terminal 1 100 World Way • Release of gasoline to soil
• Open – Site AssessmentLAX Fuel Corp. 700 World Way • Release of jet fuel 9/8/94
• Quantity reported to be “400”• No additional information
LAX Terminal 6 600 World Way • Release of aviation fuel to soil• Open – Site Assessment
Avis Car Rental 9419 Airport Blvd. • Release of gasoline to • Open – Verification
King Delivery Inc. (Dollar parking lot)
5600 Arbor Vitae St. • Release of gasoline to • Open –Remedial Action
Honeywell International Corp.
9225 Aviation Blvd. • Release of petroleum/fuels/oils VOCs to soil and groundwater
• Open – Site AssessmentNote: Database Type in bold typeface indicates a release to soil and/or groundwater that is not a closed case or an ERNS release that may have been a large quantity and the cleanup method was not listed.
Page 23
Geology, Soils and Seismicity Baseline Technical Study - Draft
Finding
Discovery 11/25/2008, pre-Cerclis screening 8/31/2010
LA County Site Mitigation List Status not reported
Remediation
Gasoline release to soil
Verification Monitoring
Spills: Release of other solvent or petroleum hydrocarbon to
Remediation
LUST 1: Diesel release to soil
LUST 2: Hydrocarbon release
Remedial Action
Smell reported from sewer, vacuum truck sent to cleanup; however source of leak unclear
Ozone injection to mitigate diesel compounds to soil
Release of diesel to soil
Site Assessment
No Further Action
Release of solvents to
Verification Monitoring
Release of gasoline to soil
Site Assessment
t fuel 9/8/94
Quantity reported to be “400”
No additional information
Release of aviation fuel to soil
Site Assessment
Release of gasoline to groundwater
erification Monitoring
Release of gasoline to groundwater
Remedial Action
Release of petroleum/fuels/oils and VOCs to soil and groundwater
Site Assessment
Note: Database Type in bold typeface indicates a release to soil and/or groundwater that is not a closed case or an ERNS
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
Figure 3.5. Environmental Sites of High
Source: ConnectLAX, 2011
3.8.2. Oil and Gas The western portion of the Project Study Area is located adjacent to the northern limit of a methane buffer zone associated with the El Segundo Oil Field. The El Segundo Oil Field located approximately 1.3 miles south of the southernmost Project to the town of EI Segundo and the Standard Oil Company's El Segundo refinery site. The ofield is served and bisected by several major highways connecting the Marina Del Rey, Manhattan Beach, Redondo Beach on the west side of the Los Angeles Basin. approximate location of the oil field and its position with respect the Project are shown on Figure 3.6, Methane Hazards and Resources (DOGGR) Oil Wells. Common features associated with oil field properties include the release of methane and hydrogen sulfide soil leaking wells, and wells not plugged and abandoned to current standards. identifies at least one abandoned oil wellCentury Boulevard.
Geology, Soils and Seismicity Baseline Technical Study
. Environmental Sites of High-Priority/Concern
The western portion of the Project Study Area is located adjacent to the northern limit of a er zone associated with the El Segundo Oil Field. The El Segundo Oil Field
located approximately 1.3 miles south of the southernmost Project routing optionsto the town of EI Segundo and the Standard Oil Company's El Segundo refinery site. The ofield is served and bisected by several major highways connecting the Marina Del Rey, Manhattan Beach, Redondo Beach on the west side of the Los Angeles Basin. approximate location of the oil field and its position with respect the Project routing
, Methane Hazards and Division of Oil, Gas and Geothermal Oil Wells. Common features associated with oil field properties include
the release of methane and hydrogen sulfide soil gas, oil seepage, tar impregnated soils, plugged and abandoned to current standards. The DOGGR
identifies at least one abandoned oil well (inactive, plugged) previously located northerly of W.
Page 24
Geology, Soils and Seismicity Baseline Technical Study - Draft
The western portion of the Project Study Area is located adjacent to the northern limit of a er zone associated with the El Segundo Oil Field. The El Segundo Oil Field
routing options, adjacent to the town of EI Segundo and the Standard Oil Company's El Segundo refinery site. The oil field is served and bisected by several major highways connecting the Marina Del Rey, Manhattan Beach, Redondo Beach on the west side of the Los Angeles Basin. The
routing options , Gas and Geothermal
Oil Wells. Common features associated with oil field properties include gas, oil seepage, tar impregnated soils,
The DOGGR previously located northerly of W.
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
Figure 3.6. Methane Hazards and DOGGR Oil Wells
Sources: Esri, 2012; DOGGR, 2010; City of Los Angeles, 2004
Methane and Hydrogen Sulfide areunderground segments and other excavations through soil and also through discontinuities (fractures, faults, etc.) in bedrock. construction and operation to ensure that they do not adversely impact constructioperation of the system. Methane: Methane (CH4) is a naturally occurring the decomposition of organic materials. Methane is common in oil and gas fields and often occurs associated with hydrogen sulfide gas. toxic. Rather, it is considered asphyxiating ascompared to air of 0.55) is lighter than air and tends to rise through the ground and dissipateIts concentrations are typically reported as percent volume in air relative to the lower and upper explosive limits, 5 and 15 percent volume respectively.
Geology, Soils and Seismicity Baseline Technical Study
. Methane Hazards and DOGGR Oil Wells
, 2012; DOGGR, 2010; City of Los Angeles, 2004
and Hydrogen Sulfide are considered hazardous. These gases may seep into d other excavations through soil and also through discontinuities
(fractures, faults, etc.) in bedrock. As such, they require special consideration for both the construction and operation to ensure that they do not adversely impact constructi
is a naturally occurring colorless and odorless gas associated with the decomposition of organic materials. Methane is common in oil and gas fields and often occurs associated with hydrogen sulfide gas. Methane gas, while explosive, is not highly
is considered asphyxiating as oxygen is displaced. Methane (relative is lighter than air and tends to rise through the ground and dissipateically reported as percent volume in air relative to the lower and
upper explosive limits, 5 and 15 percent volume respectively.
Page 25
Geology, Soils and Seismicity Baseline Technical Study - Draft
seep into the d other excavations through soil and also through discontinuities
As such, they require special consideration for both the construction and operation to ensure that they do not adversely impact construction and
gas associated with the decomposition of organic materials. Methane is common in oil and gas fields and often
gas, while explosive, is not highly relative density
is lighter than air and tends to rise through the ground and dissipate. ically reported as percent volume in air relative to the lower and
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
Hydrogen Sulfide: Hydrogen sulfide organic and inorganic matter that conhighly toxic when inhaled. A mixture of Hydrogen Sulfide and air is considered explosiveHydrogen sulfide (relative density accumulate above the groundwater table and within depressionsHydrogen Sulfide concentrations are typically reported as part per million (ppm) with maximum allowable in the working environment being 10 ppm. limits are 4.3 and 45.5 percent volume respectively.
3.9. MINERAL RESOURCES Regarding loss of mineral resources, the geologic materials, such as sand and gravel, that may be considered mineral resources and which could be used as construction aggregate. However, been previously mined in the area, mining the material uneconomical.
3.10. EXISTING STRUCTURES Construction and operation of the various alternatives beinsubterranean disturbances. The and in industrial and commercial areas. Proposed structures are generally within the right-of-way (ROW) or within areas of structures will remain outside of the Project ROW planned construction. Although proper design and careful installation of shoring can typically mitigate potential disturbances to structures adjacent to excavations, the need for additional protection measures will ultimately depend on excavation methods, existing building foundations, and whether the buildings can satisfactorily accommodate the expected settlement due excavation-related deformation. Foundation layouts during advanced conceptual engineering activity A survey of existing buildings and infrastructure likely to be impacted by the project will be essential to help identify structures that may require the implementation of additional protection measures. The potential settlement of existing structures adjacent to planned shoring and excavation should also be evaluated. Sensitive structures, those that may be damaged by minor settlement (less than ¼ inch), may require underpinning. A survey of existing utilities potentially impacted by the Project was performed by others (ConnectLAX, 2011a). A preliminary survey of existing building foundations was performed as part of the current study.
Geology, Soils and Seismicity Baseline Technical Study
Hydrogen sulfide (H2S) is produced by the anaerobic decomposition of organic and inorganic matter that contains sulfur, distinguished by its rotten eggs smell
A mixture of Hydrogen Sulfide and air is considered explosivedensity compared to air of 1.189) is heavier than air and tends to
above the groundwater table and within depressions within the ground.Hydrogen Sulfide concentrations are typically reported as part per million (ppm) with maximum allowable in the working environment being 10 ppm. Its lower and upper explosive
re 4.3 and 45.5 percent volume respectively.
Regarding loss of mineral resources, the Project Study Area traverses areas underlain by geologic materials, such as sand and gravel, that may be considered mineral resources and
be used as construction aggregate. However, since these materials have not been previously mined in the area, mining the material has likely been found to be
Construction and operation of the various alternatives being considered may result in The Project routing options are located within an
industrial and commercial areas. Proposed structures are generally within the within areas to be acquired for the Project ROW. However, a number
will remain outside of the Project ROW within the zone of influence of the
Although proper design and careful installation of shoring can typically mitigate potential sturbances to structures adjacent to excavations, the need for additional protection measures will ultimately depend on excavation methods, existing building foundations, and whether the buildings can satisfactorily accommodate the expected settlement due
related deformation. Foundation layouts for affected buildings will be obtained during advanced conceptual engineering activity.
A survey of existing buildings and infrastructure likely to be impacted by the project will be p identify structures that may require the implementation of additional
protection measures. The potential settlement of existing structures adjacent to planned shoring and excavation should also be evaluated. Sensitive structures, those that may be
ged by minor settlement (less than ¼ inch), may require underpinning.
A survey of existing utilities potentially impacted by the Project was performed by others A preliminary survey of existing building foundations was performed as
Page 26
Geology, Soils and Seismicity Baseline Technical Study - Draft
is produced by the anaerobic decomposition of , distinguished by its rotten eggs smell. It is
A mixture of Hydrogen Sulfide and air is considered explosive. ) is heavier than air and tends to
within the ground. Hydrogen Sulfide concentrations are typically reported as part per million (ppm) with
Its lower and upper explosive
traverses areas underlain by geologic materials, such as sand and gravel, that may be considered mineral resources and
these materials have not been found to be
g considered may result in an existing airport
industrial and commercial areas. Proposed structures are generally within the Project . However, a number
within the zone of influence of the
Although proper design and careful installation of shoring can typically mitigate potential sturbances to structures adjacent to excavations, the need for additional protection measures will ultimately depend on excavation methods, existing building foundations, and whether the buildings can satisfactorily accommodate the expected settlement due to
will be obtained
A survey of existing buildings and infrastructure likely to be impacted by the project will be p identify structures that may require the implementation of additional
protection measures. The potential settlement of existing structures adjacent to planned shoring and excavation should also be evaluated. Sensitive structures, those that may be
A survey of existing utilities potentially impacted by the Project was performed by others A preliminary survey of existing building foundations was performed as
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
3.10.1. Central Terminal Area Existing structures potentially impacted by Project routing options include multipassenger terminal buildings, elevated roadway structures, multicontrol towers, central plant, theme buildingMost of the structures are supported on shallow spreadthat extend several feet below the lowest floor level (Camp, DresserStructures founded on deep fill are supported on drilled piles ranging in diameter from 18 inches for parking structures to 8 feet for elevated roadways (Camp, Dresser & McKee, Inc., 2001).
Sources: ConnectLAX, 2011, LADBS Building Records
Geology, Soils and Seismicity Baseline Technical Study
Existing structures potentially impacted by Project routing options include multipassenger terminal buildings, elevated roadway structures, multi-story parking structures,
theme building, and ancillary maintenance facilitiesMost of the structures are supported on shallow spread-type foundations (footings, mats) that extend several feet below the lowest floor level (Camp, Dresser & McKee, Inc., 2001)Structures founded on deep fill are supported on drilled piles ranging in diameter from 18 inches for parking structures to 8 feet for elevated roadways (Camp, Dresser & McKee, Inc.,
Figure 3.7. Existing Structures
ConnectLAX, 2011, LADBS Building Records
Page 27
Geology, Soils and Seismicity Baseline Technical Study - Draft
Existing structures potentially impacted by Project routing options include multi-story story parking structures,
, and ancillary maintenance facilities (Figure 3.7). type foundations (footings, mats)
& McKee, Inc., 2001). Structures founded on deep fill are supported on drilled piles ranging in diameter from 18 inches for parking structures to 8 feet for elevated roadways (Camp, Dresser & McKee, Inc.,
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
3.10.2. Off-Airport Area Existing structures potentially impacted by Project routing options include buildings (primarily along Century Boulevard and Aistructures, warehouse buildings, office buildings, and retail structuresdatabase of existing buildings potentially impacted by the Project is shown in Airport Area Structures. The database was compiled using publicly available information and visual inspection. Based on the available information, highappear to be supported on pile foundations. Warehouse buildings and retail structures appear to be supported on shallow spread
Geology, Soils and Seismicity Baseline Technical Study
Existing structures potentially impacted by Project routing options include highprimarily along Century Boulevard and Airport Boulevard), multi-story parking
structures, warehouse buildings, office buildings, and retail structures (Figure potentially impacted by the Project is shown in Table
Airport Area Structures. The database was compiled using publicly available information and
Based on the available information, high-rise buildings and multi-story parking structures pported on pile foundations. Warehouse buildings and retail structures
appear to be supported on shallow spread-type foundations (footings, mats).
Page 28
Geology, Soils and Seismicity Baseline Technical Study - Draft
high-rise hotel story parking
Figure 3.7). An initial Table 3.4, Off-
Airport Area Structures. The database was compiled using publicly available information and
story parking structures pported on pile foundations. Warehouse buildings and retail structures
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
Table
Street Address Parcel Number
9430 S BELLANCA AVE
4125020008
9432 S BELLANCA AVE
4125021007
9420 S BELLANCA AVE
4125020007
9400 S BELLANCA AVE
4125020007
- 4125020006
9326 S BELLANCA AVE
4125020006
9310 S BELLANCA AVE
4125020006
- 4125020006
9201 S PORTAL AVE 4125020005
5630 W ARBOR VITAE ST/9201 S BELLANCA
AVE 4125020016
- 4125020016
9221 S BELLANCA AVE
4125020016
- 4125020016
9301 S BELLANCA AVE
4125020016
- 4125020016
- 4125020016
- 4125020016
- 4125020016
9319-9323 S BELLANCA AVE
4125020012
5651-5661 W 96TH ST 4125021025
5701-5721 W 96TH ST 4125021014
5735-5737 W 96TH ST 4125021008
5730 W ARBOR VITAE ST
4125020002
5740 W ARBOR VITAE ST
4125020001
5755-5763 W 96TH ST 4125021024
Geology, Soils and Seismicity Baseline Technical Study
Table 3.4. Off-Airport Area Structures
Parcel Area (sq. ft.)
Full Geotechnical
Report Available
Stories Foundation Information
4125020008 26589.90 - -
4125021007 70095.50 - -
4125020007 15394.30 - -
4125020007 20972.60 - -
4125020006 18985.70 - -
4125020006 36253.20 - -
4125020006 36276.40 - -
4125020006 36299.30 - -
4125020005 36237.20 - -
4125020016 14360.00 - -
4125020016 13375.80 - -
4125020016 14850.90 - -
4125020016 13750.80 - -
4125020016 14850.90 - -
4125020016 13750.90 - -
4125020016 3750.20 - -
4125020016 4050.20 - -
4125020016 89331.20 - -
4125020012 82317.90 - -
4125021025 137616.90 - 1*
4125021014 130778.00 - 1*
4125021008 43560.60 - 1*
4125020002 102021.50 - -
4125020001 68136.90 - -
4125021024 119827.90 - 1*
Page 29
Geology, Soils and Seismicity Baseline Technical Study - Draft
Foundation Information
-
Area 1 on Figure 3.7
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
Street Address Parcel Number
5767-5771 W 96TH ST 4125021010
- 4125020014
5760-5800 W ARBOR VITAE ST
4125020014
9520 S BELFORD AVE/5815 W 96TH ST
4125023007
9514 S BELFORD AVE 4125023917
9508-9512 1/2 S BELFORD AVE
4125023909
9500-9504 1/2 S BELFORD AVE
4125023908
9426-9436 S BELFORD AVE
4125023915
9418-9422 1/2 S BELFORD AVE
4125023900
9412-9416 1/2 S BELFORD AVE
4125023001
9406 S BELFORD AVE 4125022906
9400 S BELFORD AVE 4125022909
9324 S BELFORD AVE 4125022014
9318 S BELFORD AVE 4125022014
9312 S BELFORD AVE 4125022014
9306 S BELFORD AVE 4125022905
9300 S BELFORD AVE 4125022900
5819 W 93RD ST 4125022900
5823-5829 1/2 W 93RD ST
4125022915
5833-5839 W 93RD ST 4125022914
5841 W 93RD ST 4125022910
5847 W 93RD ST 4125022910
9519 S BELFORD AVE/5831 W 96TH ST
4125023905
5833-5837 W 96TH ST 4125023902
5839-5843 1/2 W 96TH ST
4125023904
5845-5851 W 96TH ST 4125023912
5855 W 96TH ST 4125023907
9420-9440 S AIRPORT BLVD
4125023903
Geology, Soils and Seismicity Baseline Technical Study
Parcel Area (sq. ft.)
Full Geotechnical
Report Available
Stories Foundation Information
4125021010 98028.20 - 1*
4125020014 50362.70 - -
4125020014 122584.20 - -
4125023007 7981.40 - -
4125023917 7440.50 - -
4125023909 7440.50 - -
4125023908 7440.50 - -
4125023915 7440.50 - -
4125023900 7440.50 - -
4125023001 7650.80 - -
4125022906 7337.30 - -
5022909 7200.50 - -
4125022014 7200.40 - -
4125022014 7200.50 - -
4125022014 7440.10 - -
4125022905 7213.10 - -
4125022900 11785.90 - -
4125022900 9281.00 - -
4125022915 7334.00 - -
4125022914 7200.50 - -
4125022910 7200.50 - -
4125022910 7750.50 - -
4125023905 6398.40 - -
4125023902 6311.20 - -
4125023904 6311.20 - -
4125023912 6311.20 - -
4125023907 6129.90 - -
4125023903 81612.50 - -
Page 30
Geology, Soils and Seismicity Baseline Technical Study - Draft
Foundation Information
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
Street Address Parcel Number
9501-9511 S BELFORD AVE
4125023910
5836 W 95TH ST 4125023922
5842 W 95TH ST 4125023925
5848 W 95TH ST 4125023923
5854 W 95TH ST 4125023924
5855 W 95TH ST 4125023924
5849 W 95TH ST 4125023924
5843 W 95TH ST 4125023901
5833-5837 1/2 W 95TH ST
4125023911
9415-9425 S BELFORD AVE
4125023914
9410 S AIRPORT BLVD
4125022903
- 4125022901
5860-5880 W 93RD ST/9311-9400 S BELFORD AVE
4125022901
5705 W 98TH ST 4125024022
5707 W 98TH ST 4125024022
5721 W 98TH ST 4125024010
5739 W 98TH ST 4125024011
5807 W 98TH ST 4125024019
- 4125024019
5835 W 98TH ST 4125024016
- 4125024013
9750 S AIRPORT BLVD
4125024020
9620 S AIRPORT BLVD
4125023034
5760 W 96TH ST 4125024026
5730-5736 W 96TH ST 4125024028
5716-5720 W 96TH ST 4125024027
5706 W 96TH ST 4125024024
5700 W 96TH ST 4125024024
Geology, Soils and Seismicity Baseline Technical Study
Parcel Area (sq. ft.)
Full Geotechnical
Report Available
Stories Foundation Information
4125023910 7285.80 - -
4125023922 6232.60 - -
4125023925 6012.10 - -
4125023923 7613.20 - -
4125023924 8393.40 - -
4125023924 8489.90 - -
4125023924 7018.20 - -
4125023901 6225.50 - -
4125023911 6228.30 - -
4125023914 6999.90 - -
4125022903 28301.20 - -
5022901 1146.90 - -
4125022901 138082.70 - -
4125024022 112604.70 - 2*
4125024022 54432.00 - 2*
4125024010 54038.30 - -
4125024011 106858.10 - -
4125024019 45002.80 - 1*
4125024019 7493.70 - -
4125024016 67504.70 - -
4125024013 11236.80 - -
4125024020 124223.80 Yes 5 Shallow
Foundations
4125023034 114053.00 - 11*
4125024026 74601.00 - 1*
4125024028 41954.50 1*
4125024027 60831.40 Yes 1 Shallow
Foundations
4125024024 41981.20 - 2*
4125024024 8968.50 - 2*
Page 31
Geology, Soils and Seismicity Baseline Technical Study - Draft
Foundation Information
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Area 2 on Figure 3.7
-
-
-
-
-
-
-
Shallow Foundations
-
-
-
Shallow Foundations
-
-
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
Street Address Parcel Number
9601-9615 S BELLANCA AVE
4125024024
- 4125024003
- 4125024002
9625-9627 S BELLANCA AVE
4125024025
9601 S BELFORD AVE 4125023926
9605-9611 S BELFORD AVE
4125023913
9613 S BELFORD AVE 4125023016
9619 S BELFORD AVE 4125023015
9625-9629 S BELFORD AVE
4125023906
9630-9635 S BELFORD AVE
4125023927
9624-9628 S BELFORD AVE
4125023919
9618-9622 S BELFORD AVE
4125023921
9612-9614 S BELFORD AVE
4125023920
9606 S BELFORD AVE 4125023916
9600 S BELFORD AVE 4125023918
9601 S AIRPORT BLVD
4124009921
- 4124029026
5900 W 96TH PL 4124029026
- 4124029025
5906-5910 W 96TH PL 4124029011
- 4124029024
5912 W 96TH PL 4124029024
- 4124029029
5918 W 96TH PL 4124029023
- 4124029022
5922 W 96TH PL 4124029010
- 4124029021
5928 W 96TH PL 4124029009
- 4124029020
Geology, Soils and Seismicity Baseline Technical Study
Parcel Area (sq. ft.)
Full Geotechnical
Report Available
Stories Foundation Information
4125024024 72751.90 - 2*
4125024003 4515.20 - -
4125024002 17987.30 - -
4125024025 19732.90 - -
4125023926 7888.30 - -
4125023913 7127.90 - -
4125023016 7033.90 - -
4125023015 7892.90 - -
4125023906 10752.10 - -
4125023927 7450.30 - -
4125023919 9745.00 - -
4125023921 7193.30 - -
4125023920 6520.50 - -
4125023916 6600.40 - -
4125023918 7535.20 - -
09921 36688.00 - -
4124029026 1835.20 - -
4124029026 7558.10 - -
4124029025 510.00 - -
4124029011 5865.80 - -
4124029024 510.00 - -
4124029024 5865.70 - -
4124029029 510.00 - -
4124029023 5865.50 - -
4124029022 510.00 - -
4124029010 5865.40 - -
4124029021 510.00 - -
4124029009 5865.20 - -
4124029020 510.00 - -
Page 32
Geology, Soils and Seismicity Baseline Technical Study - Draft
Foundation Information
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
Street Address Parcel Number
5932 W 96TH PL 4124029039
- 4124029019
5938 W 96TH PL 4124029038
- 4124029038
- 4124029018
5942 W 96TH ST 4124029037
- 4124029037
- 4124029037
- 4124029017
5948 W 96TH ST 4124029036
- 4124029036
- 4124029036
- 4124029016
5952 W 96TH ST 4124029035
- 4124029035
- 4124029015
5958 W 96TH ST 4124029034
- 4124029034
- 4124029014
5962 W 96TH ST 4124029033
- 4124029033
- 4124029013
9717-9775 S Airport Blvd.; 5901-5919 W
98th St. 4124029031
5966 W 96TH ST 4124029032
- 4124029012
5972 W 96TH ST 4124029012
9790 S BELLANCA AVE
4125026014
9784 S BELLANCA AVE
4125026013
9780 S BELLANCA AVE
4125026012
9700 S BELLANCA AVE
4125026011
Geology, Soils and Seismicity Baseline Technical Study
Parcel Area (sq. ft.)
Full Geotechnical
Report Available
Stories Foundation Information
4124029039 5865.60 - -
4124029019 510.00 - -
4124029038 5865.00 - -
4124029038 592.80 - -
4124029018 510.00 - -
4124029037 5864.80 - -
4124029037 1530.20 - -
4124029037 770.70 - -
4124029017 510.00 - -
4124029036 5864.60 - -
4124029036 1518.50 - -
4124029036 267.40 - -
4124029016 510.00 - -
4124029035 5864.50 - -
4124029035 1076.60 - -
4124029015 510.00 - -
4124029034 5864.40 - -
4124029034 552.30 - -
4124029014 510.00 - -
4124029033 5864.20 - -
4124029033 205.30 - -
4124029013 510.00 - -
4124029031 148258.80 - 1*
4124029032 5864.30 - -
4124029012 510.00 - -
4124029012 5863.90 - -
4125026014 8450.50 - -
4125026013 29944.40 - -
4125026012 39535.90 - -
4125026011 39617.60 - -
Page 33
Geology, Soils and Seismicity Baseline Technical Study - Draft
Foundation Information
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
Street Address Parcel Number
9620-9632 S BELLANCA AVE
4125021027
9600-9610 S BELLANCA AVE
4125021026
9855-9905 N BELLANCA AVE/5651-5657 W CENTURY
BLVD
4125025040
- 4125025035
5707 W CENTURY BLVD
4125025035
5767 W CENTURY BLVD
4125025036
5827 W CENTURY BLVD
4125025039
5831 W CENTURY BLVD
4125025039
9840 N AIRPORT BLVD/5835-5891 W Century BLVD
4125025039
- 4125025039
- 4125025039
5756 W 98TH ST 4125025030
5747 W 98TH ST 4125025036
- 4125025036
5720 W 98TH ST 4125025028
- 4125025035
- 4125025035
- 4125025035
- 4125025028
5700 W 98TH ST 4125025040
5607-5625 W CENTURY BLVD
4125026010
9900 N BELLANCA AVE
4125026010
- 4125026010
5601 W CENTURY BLVD
4125026007
- 4125026007
- 4125026007
Geology, Soils and Seismicity Baseline Technical Study
Parcel Area (sq. ft.)
Full Geotechnical
Report Available
Stories Foundation Information
4125021027 62734.70 - -
4125021026 87116.50 - -
4125025040 77994.30 No ? Deep
Foundations
4125025035 10658.60 - -
4125025035 86282.90 - -
4125025036 85510.50 - 8*
4125025039 83363.00 - 16*
4125025039 21001.40 - 16*
4125025039 244405.70 - 16*
4125025039 22131.00 - 16*
4125025039 88516.60 - 16*
4125025030 52265.30 - 15*
4125025036 33140.10 - -
4125025036 6114.70 - -
4125025028 59778.70 - 7*
4125025035 26467.80 - 12*
4125025035 6928.20 - 12*
4125025035 3301.60 - 12*
4125025028 7502.30 - -
4125025040 76952.10 No 3
4125026010 35654.00 - -
4125026010 7791.50 - -
4125026010 14324.40 - -
4125026007 36734.20 Yes 0* Shallow
Foundations
4125026007 7984.00 - -
4125026007 38855.00 - -
Page 34
Geology, Soils and Seismicity Baseline Technical Study - Draft
Foundation Information
-
-
Deep Foundations
Area 3 on Figure 3.7
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Shallow Foundations
-
-
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
Street Address Parcel Number
- 4125026802
9830 S BELLANCA AVE
4125026009
5928 W 98TH ST 4124030041
9801 S AIRPORT BLVD
4124030041
9841 N AIRPORT BLVD
4124030042
5901 W CENTURY BLVD
4124030042
5940 W 98TH ST 4124030015
5933 W CENTURY BLVD
4124030016
5941 W CENTURY BLVD
4124030016
5935 W CENTURY BLVD
4124030016
5911 W CENTURY BLVD
4124030016
5960 W 98TH ST 4124030039
5959 W CENTURY BLVD
4124030040
5980 W 98TH ST 4124030043
6053 W CENTURY BLVD
4124030038
6033 W CENTURY BLVD
4124030037
6101 W CENTURY BLVD
4124030036
6120 W 98TH ST 4124030900
6145 W CENTURY BLVD
4124030900
6135 W CENTURY BLVD
4124030900
6141 W CENTURY BLVD
4124030900
- 4124028041
5978 W 96TH ST 4124028041
- 4124028041
5982 W 96TH ST 4124028041
Geology, Soils and Seismicity Baseline Technical Study
Parcel Area (sq. ft.)
Full Geotechnical
Report Available
Stories Foundation Information
4125026802 10084.40 - -
4125026009 47316.70 - -
4124030041 62618.10 - 8*
4124030041 62618.10 - 8*
4124030042 70937.00 - 15*
4124030042 70937.00 - -
4124030015 67500.20 - 6*
4124030016 73094.70 - 12*
4124030016 73094.70 - 12*
4124030016 73094.70 - 12*
4124030016 73094.70 - 12*
4124030039 60945.40 - -
030040 79488.30 - 13*
4124030043 66698.30 - 15*
4124030038 71399.60 - 12*
4124030037 68463.60 - 14*
4124030036 248577.20 Yes 12 (office) and 2 (bank)
Deep Foundation
4124030900 109280.40 - -
4124030900 109280.40 - -
4124030900 109280.40 - -
4124030900 109280.40 - -
4124028041 510.00 - -
4124028041 5863.80 - -
4124028041 510.00 - -
4124028041 5863.60 - -
Page 35
Geology, Soils and Seismicity Baseline Technical Study - Draft
Foundation Information
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Deep Foundations
-
-
-
-
-
Area 4 on Figure 3.7
-
-
-
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
Street Address Parcel Number
- 4124028041
5988 W 96TH ST 4124028041
- 4124028041
5994 W 96TH ST 4124028041
- 4124028041
6000 W 96TH ST 4124028041
- 4124028041
6006 W 96TH ST 4124028041
- 4124028041
6010 W 96TH ST 4124028041
- 4124028041
6016 W 96TH ST 4124028041
- 4124028041
6020 W 96TH ST 4124028041
- 4124028041
6026 W 96TH ST 4124028041
- 4124028041
6032 W 96TH ST 4124028041
- 4124028041
6036 W 96TH ST 4124028041
- 4124028041
6042 W 96TH ST 4124028041
- 4124028041
6046 W 96TH ST 4124028041
- 4124028041
6052 W 96TH ST 4124028041
- 4124028041
6100 W 96TH ST 4124028041
- 4124028041
6106-6108 W 96TH ST 4124028041
- 4124027030
- 4124027029
9750 S VICKSBURG AVE
412027900
Geology, Soils and Seismicity Baseline Technical Study
Parcel Area (sq. ft.)
Full Geotechnical
Report Available
Stories Foundation Information
4124028041 510.00 - -
4124028041 5863.40 - -
4124028041 510.00 - -
4124028041 5863.30 - -
4124028041 510.00 - -
4124028041 5863.20 - -
4124028041 510.00 - -
4124028041 5863.00 - -
4124028041 510.00 - -
4124028041 5862.90 - -
4124028041 510.00 - -
4124028041 5862.70 - -
4124028041 510.00 - -
4124028041 5862.60 - -
4124028041 510.00 - -
4124028041 5862.40 - -
4124028041 510.00 - -
4124028041 5862.30 - -
4124028041 510.00 - -
4124028041 5862.10 - -
4124028041 510.00 - -
4124028041 5862.00 - -
4124028041 510.00 - -
4124028041 5861.80 - -
4124028041 510.00 - -
4124028041 5861.70 - -
4124028041 510.00 - -
4124028041 5861.60 - -
4124028041 510.00 - -
4124028041 5861.40 - -
4124027030 500.00 - -
4124027029 1250.10 - -
42379.00 - -
Page 36
Geology, Soils and Seismicity Baseline Technical Study - Draft
Foundation Information
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
- Area 5 on Figure 3.7 -
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
Street Address Parcel Number
6175 W 98TH ST 412027900
6250 W 96TH ST 4124025049
9611 S VICKSBURG AVE
4124025049
9700 S SEPULVEDA BLVD
4124026900
- 4124030023
6140 W 98TH ST 4124030029
6151 W CENTURY BLVD
4124030029
6140 W 98TH ST 4124030029
6151 W CENTURY BLVD
4124030034
- 4124026004
9860 S SEPULVEDA BLVD
4124026005
6211 W CENTURY BLVD
4124026005
6225 W CENTURY BLVD
4124026005
6251 W CENTURY BLVD
4124026005
6255 W CENTURY BLVD
4124026005
9800 S SEPULVEDA BLVD
4124026002
5758 W Century Blvd 4129028900
5800 W Century Blvd 4129028900
5932 Century Blvd 4129028900
5600-5628 W Century Blvd; 5720 W AVION DR; 10040 -10080 S INTERNATIONAL
ROAD; 5640 W 104TH ST; 10001-10385 S AVIATION BLVD
4129028900
6300 W 96TH ST 4117035900
9601 S SEPULVEDA BLVD
4117035900
Geology, Soils and Seismicity Baseline Technical Study
Parcel Area (sq. ft.)
Full Geotechnical
Report Available
Stories Foundation Information
42379.00 - -
4124025049 6277.00 - -
4124025049 6277.00 - -
4124026900 179728.50 - -
4124030023 62936.90 - 6*
29 78656.70 - -
4124030029 78656.70 - -
4124030029 78656.70 - -
4124030034 76777.40 - 12*
4124026004 7260.80 - 5*
4124026005 201627.10 - -
4124026005 201627.10 - -
4124026005 201627.10 - -
4124026005 201627.10 - -
4124026005 201627.10 - -
4124026002 4574.40 - 9*
028900 245513.30 Yes 2 Probable Deep Foundations
4129028900 356934.50 Yes ? Shallow
Foundations
4129028900 - Yes ? Shallow
Foundations
4129028900 1016383.50 No ? Shallow
Foundations
4117035900 114338.40
4117035900 114338.40 Yes 3 Probable Deep Foundations
Page 37
Geology, Soils and Seismicity Baseline Technical Study - Draft
Foundation Information
-
-
-
-
-
Area 6 on Figure 3.7
-
-
-
-
-
-
-
-
-
-
-
Probable Deep Foundations
Area 7 on Figure 3.7
Shallow Foundations
Shallow Foundations
Shallow Foundations
- Area 8 on Figure 3.7 Probable Deep
Foundations
Metro Green Line to LAX Phase I –AA/DEIS/DEIR
Street Address Parcel Number
6320 W 96TH ST 4117035900
701 World Way 4129027902
- 4129027902
255-277 W Center Way; 245 E WORLD WAY; 10201 S Lincoln
Blvd.
4129027902
Source: LADBS Building Records Note: *asterisk denotes value obtained from field reconnaissance
Geology, Soils and Seismicity Baseline Technical Study
Parcel Area (sq. ft.)
Full Geotechnical
Report Available
Stories Foundation Information
4117035900 114338.40 Yes 1 Deep
Foundations
4129027902 326186.70 Yes 2 Deep
Foundations
4129027902 10139.80
4129027902 93882.10 Yes ? Probable Deep Foun
*asterisk denotes value obtained from field reconnaissance
Page 38
Geology, Soils and Seismicity Baseline Technical Study - Draft
Foundation Information
Deep Foundations
Deep Foundations
Probable Deep Foundations