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118E118E118E118E118E118E118E118E118E
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170N170N170N170N170N170N170N170N170N
134E134E134E134E134E134E134E134E134E
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47N47N47N47N47N47N47N47N47N
47N47N47N47N47N47N47N47N47N
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v
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vv
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Hacienda HeightsHacienda HeightsHacienda HeightsHacienda HeightsHacienda HeightsHacienda HeightsHacienda HeightsHacienda HeightsHacienda Heights DiamondDiamondDiamondDiamondDiamondDiamondDiamondDiamondDiamondBarBarBarBarBarBarBarBarBar
Pico RiveraPico RiveraPico RiveraPico RiveraPico RiveraPico RiveraPico RiveraPico RiveraPico Rivera
RowlandRowlandRowlandRowlandRowlandRowlandRowlandRowlandRowlandHeightsHeightsHeightsHeightsHeightsHeightsHeightsHeightsHeights
WalnutWalnutWalnutWalnutWalnutWalnutWalnutWalnutWalnut
Westlake VillageWestlake VillageWestlake VillageWestlake VillageWestlake VillageWestlake VillageWestlake VillageWestlake VillageWestlake Village
West HollywoodWest HollywoodWest HollywoodWest HollywoodWest HollywoodWest HollywoodWest HollywoodWest HollywoodWest Hollywood
Beverly HillsBeverly HillsBeverly HillsBeverly HillsBeverly HillsBeverly HillsBeverly HillsBeverly HillsBeverly Hills
CalabasasCalabasasCalabasasCalabasasCalabasasCalabasasCalabasasCalabasasCalabasas
Agoura HillsAgoura HillsAgoura HillsAgoura HillsAgoura HillsAgoura HillsAgoura HillsAgoura HillsAgoura Hills
BurbankBurbankBurbankBurbankBurbankBurbankBurbankBurbankBurbank
MalibuMalibuMalibuMalibuMalibuMalibuMalibuMalibuMalibuCulver CityCulver CityCulver CityCulver CityCulver CityCulver CityCulver CityCulver CityCulver City
Los AngelesLos AngelesLos AngelesLos AngelesLos AngelesLos AngelesLos AngelesLos AngelesLos Angeles
Santa MonicaSanta MonicaSanta MonicaSanta MonicaSanta MonicaSanta MonicaSanta MonicaSanta MonicaSanta Monica
El SegundoEl SegundoEl SegundoEl SegundoEl SegundoEl SegundoEl SegundoEl SegundoEl Segundo
AlhambraAlhambraAlhambraAlhambraAlhambraAlhambraAlhambraAlhambraAlhambra
San GabrielSan GabrielSan GabrielSan GabrielSan GabrielSan GabrielSan GabrielSan GabrielSan Gabriel
EastEastEastEastEastEastEastEastEastLos AngelesLos AngelesLos AngelesLos AngelesLos AngelesLos AngelesLos AngelesLos AngelesLos Angeles
MontebelloMontebelloMontebelloMontebelloMontebelloMontebelloMontebelloMontebelloMontebello
SouthSouthSouthSouthSouthSouthSouthSouthSouthSan GabrielSan GabrielSan GabrielSan GabrielSan GabrielSan GabrielSan GabrielSan GabrielSan Gabriel
Monterey ParkMonterey ParkMonterey ParkMonterey ParkMonterey ParkMonterey ParkMonterey ParkMonterey ParkMonterey Park
San MarinoSan MarinoSan MarinoSan MarinoSan MarinoSan MarinoSan MarinoSan MarinoSan Marino
SouthSouthSouthSouthSouthSouthSouthSouthSouthPasadenaPasadenaPasadenaPasadenaPasadenaPasadenaPasadenaPasadenaPasadena
GlendaleGlendaleGlendaleGlendaleGlendaleGlendaleGlendaleGlendaleGlendale
PasadenaPasadenaPasadenaPasadenaPasadenaPasadenaPasadenaPasadenaPasadena
South El MonteSouth El MonteSouth El MonteSouth El MonteSouth El MonteSouth El MonteSouth El MonteSouth El MonteSouth El Monte
El MonteEl MonteEl MonteEl MonteEl MonteEl MonteEl MonteEl MonteEl Monte
RosemeadRosemeadRosemeadRosemeadRosemeadRosemeadRosemeadRosemeadRosemead
Baldwin ParkBaldwin ParkBaldwin ParkBaldwin ParkBaldwin ParkBaldwin ParkBaldwin ParkBaldwin ParkBaldwin Park
IrwindaleIrwindaleIrwindaleIrwindaleIrwindaleIrwindaleIrwindaleIrwindaleIrwindale
West CovinaWest CovinaWest CovinaWest CovinaWest CovinaWest CovinaWest CovinaWest CovinaWest Covina
San DimasSan DimasSan DimasSan DimasSan DimasSan DimasSan DimasSan DimasSan Dimas
ClaremontClaremontClaremontClaremontClaremontClaremontClaremontClaremontClaremont
DuarteDuarteDuarteDuarteDuarteDuarteDuarteDuarteDuarte
La Canada FlintridgeLa Canada FlintridgeLa Canada FlintridgeLa Canada FlintridgeLa Canada FlintridgeLa Canada FlintridgeLa Canada FlintridgeLa Canada FlintridgeLa Canada Flintridge
LynwoodLynwoodLynwoodLynwoodLynwoodLynwoodLynwoodLynwoodLynwood Santa Fe SpringsSanta Fe SpringsSanta Fe SpringsSanta Fe SpringsSanta Fe SpringsSanta Fe SpringsSanta Fe SpringsSanta Fe SpringsSanta Fe Springs
South GateSouth GateSouth GateSouth GateSouth GateSouth GateSouth GateSouth GateSouth Gate DowneyDowneyDowneyDowneyDowneyDowneyDowneyDowneyDowney
La Habra HeightsLa Habra HeightsLa Habra HeightsLa Habra HeightsLa Habra HeightsLa Habra HeightsLa Habra HeightsLa Habra HeightsLa Habra Heights
CerritosCerritosCerritosCerritosCerritosCerritosCerritosCerritosCerritos
Redondo BeachRedondo BeachRedondo BeachRedondo BeachRedondo BeachRedondo BeachRedondo BeachRedondo BeachRedondo Beach
Palos VerdesPalos VerdesPalos VerdesPalos VerdesPalos VerdesPalos VerdesPalos VerdesPalos VerdesPalos VerdesEstatesEstatesEstatesEstatesEstatesEstatesEstatesEstatesEstates
Long BeachLong BeachLong BeachLong BeachLong BeachLong BeachLong BeachLong BeachLong Beach
Rolling HillsRolling HillsRolling HillsRolling HillsRolling HillsRolling HillsRolling HillsRolling HillsRolling HillsRancho Palos VerdesRancho Palos VerdesRancho Palos VerdesRancho Palos VerdesRancho Palos VerdesRancho Palos VerdesRancho Palos VerdesRancho Palos VerdesRancho Palos Verdes
Santa ClaritaSanta ClaritaSanta ClaritaSanta ClaritaSanta ClaritaSanta ClaritaSanta ClaritaSanta ClaritaSanta Clarita
Manhattan BeachManhattan BeachManhattan BeachManhattan BeachManhattan BeachManhattan BeachManhattan BeachManhattan BeachManhattan Beach
La Crescenta-La Crescenta-La Crescenta-La Crescenta-La Crescenta-La Crescenta-La Crescenta-La Crescenta-La Crescenta-MontroseMontroseMontroseMontroseMontroseMontroseMontroseMontroseMontrose
Van Nuys AirportVan Nuys AirportVan Nuys AirportVan Nuys AirportVan Nuys AirportVan Nuys AirportVan Nuys AirportVan Nuys AirportVan Nuys Airport
Los Angeles International AirportLos Angeles International AirportLos Angeles International AirportLos Angeles International AirportLos Angeles International AirportLos Angeles International AirportLos Angeles International AirportLos Angeles International AirportLos Angeles International Airport
Topanga State ParkTopanga State ParkTopanga State ParkTopanga State ParkTopanga State ParkTopanga State ParkTopanga State ParkTopanga State ParkTopanga State Park
Leo CarrilloLeo CarrilloLeo CarrilloLeo CarrilloLeo CarrilloLeo CarrilloLeo CarrilloLeo CarrilloLeo CarrilloState BeachState BeachState BeachState BeachState BeachState BeachState BeachState BeachState Beach
Santa Monica Mountains NRASanta Monica Mountains NRASanta Monica Mountains NRASanta Monica Mountains NRASanta Monica Mountains NRASanta Monica Mountains NRASanta Monica Mountains NRASanta Monica Mountains NRASanta Monica Mountains NRA
Griffith ParkGriffith ParkGriffith ParkGriffith ParkGriffith ParkGriffith ParkGriffith ParkGriffith ParkGriffith Park
Ventura CountyVentura CountyVentura CountyVentura CountyVentura CountyVentura CountyVentura CountyVentura CountyVentura County
San Bernardino CountySan Bernardino CountySan Bernardino CountySan Bernardino CountySan Bernardino CountySan Bernardino CountySan Bernardino CountySan Bernardino CountySan Bernardino County
Orange CountyOrange CountyOrange CountyOrange CountyOrange CountyOrange CountyOrange CountyOrange CountyOrange County
A n g e l e s N a t i o n a l F o r e s tA n g e l e s N a t i o n a l F o r e s tA n g e l e s N a t i o n a l F o r e s tA n g e l e s N a t i o n a l F o r e s tA n g e l e s N a t i o n a l F o r e s tA n g e l e s N a t i o n a l F o r e s tA n g e l e s N a t i o n a l F o r e s tA n g e l e s N a t i o n a l F o r e s tA n g e l e s N a t i o n a l F o r e s t
A n g e l e s N a t i o n a l F o r e s tA n g e l e s N a t i o n a l F o r e s tA n g e l e s N a t i o n a l F o r e s tA n g e l e s N a t i o n a l F o r e s tA n g e l e s N a t i o n a l F o r e s tA n g e l e s N a t i o n a l F o r e s tA n g e l e s N a t i o n a l F o r e s tA n g e l e s N a t i o n a l F o r e s tA n g e l e s N a t i o n a l F o r e s t
Harbor LakeHarbor LakeHarbor LakeHarbor LakeHarbor LakeHarbor LakeHarbor LakeHarbor LakeHarbor Lake
Live OakLive OakLive OakLive OakLive OakLive OakLive OakLive OakLive OakReservoirReservoirReservoirReservoirReservoirReservoirReservoirReservoirReservoir
Thompson CreekThompson CreekThompson CreekThompson CreekThompson CreekThompson CreekThompson CreekThompson CreekThompson CreekReservoirReservoirReservoirReservoirReservoirReservoirReservoirReservoirReservoir
Puddingstone ReservoirPuddingstone ReservoirPuddingstone ReservoirPuddingstone ReservoirPuddingstone ReservoirPuddingstone ReservoirPuddingstone ReservoirPuddingstone ReservoirPuddingstone Reservoir
HerbertHerbertHerbertHerbertHerbertHerbertHerbertHerbertHerbertLegg LakeLegg LakeLegg LakeLegg LakeLegg LakeLegg LakeLegg LakeLegg LakeLegg Lake
San
Gab
riel R
iver
San
Gab
riel R
iver
San
Gab
riel R
iver
San
Gab
riel R
iver
San
Gab
riel R
iver
San
Gab
riel R
iver
San
Gab
riel R
iver
San
Gab
riel R
iver
San
Gab
riel R
iver
Malibu LakeMalibu LakeMalibu LakeMalibu LakeMalibu LakeMalibu LakeMalibu LakeMalibu LakeMalibu Lake
Westlake ReservoirWestlake ReservoirWestlake ReservoirWestlake ReservoirWestlake ReservoirWestlake ReservoirWestlake ReservoirWestlake ReservoirWestlake Reservoir
Lake CalabasasLake CalabasasLake CalabasasLake CalabasasLake CalabasasLake CalabasasLake CalabasasLake CalabasasLake Calabasas
Encino ReservoirEncino ReservoirEncino ReservoirEncino ReservoirEncino ReservoirEncino ReservoirEncino ReservoirEncino ReservoirEncino Reservoir
Stone CanyonStone CanyonStone CanyonStone CanyonStone CanyonStone CanyonStone CanyonStone CanyonStone CanyonReservoirReservoirReservoirReservoirReservoirReservoirReservoirReservoirReservoir
Hansen DamHansen DamHansen DamHansen DamHansen DamHansen DamHansen DamHansen DamHansen DamFlood ControlFlood ControlFlood ControlFlood ControlFlood ControlFlood ControlFlood ControlFlood ControlFlood Control
BasinBasinBasinBasinBasinBasinBasinBasinBasin
Upper VanUpper VanUpper VanUpper VanUpper VanUpper VanUpper VanUpper VanUpper VanNorman LakeNorman LakeNorman LakeNorman LakeNorman LakeNorman LakeNorman LakeNorman LakeNorman Lake
Hollywood ReservoirHollywood ReservoirHollywood ReservoirHollywood ReservoirHollywood ReservoirHollywood ReservoirHollywood ReservoirHollywood ReservoirHollywood Reservoir
Los Angeles River
Los Angeles River
Los Angeles River
Los Angeles River
Los Angeles River
Los Angeles River
Los Angeles River
Los Angeles River
Los Angeles River
Rio H
ondo
Rio H
ondo
Rio H
ondo
Rio H
ondo
Rio H
ondo
Rio H
ondo
Rio H
ondo
Rio H
ondo
Rio H
ondo
Devils GateDevils GateDevils GateDevils GateDevils GateDevils GateDevils GateDevils GateDevils GateReservoirReservoirReservoirReservoirReservoirReservoirReservoirReservoirReservoir
Cogswell ReservoirCogswell ReservoirCogswell ReservoirCogswell ReservoirCogswell ReservoirCogswell ReservoirCogswell ReservoirCogswell ReservoirCogswell Reservoir
Big Tujunga DamBig Tujunga DamBig Tujunga DamBig Tujunga DamBig Tujunga DamBig Tujunga DamBig Tujunga DamBig Tujunga DamBig Tujunga Dam
118° 45' 00"118° 45' 00"118° 45' 00"118° 45' 00"118° 45' 00"118° 45' 00"118° 45' 00"118° 45' 00"118° 45' 00" 34° 15' 00" 34° 15' 00" 34° 15' 00" 34° 15' 00" 34° 15' 00" 34° 15' 00" 34° 15' 00" 34° 15' 00" 34° 15' 00"
118° 30' 00"118° 30' 00"118° 30' 00"118° 30' 00"118° 30' 00"118° 30' 00"118° 30' 00"118° 30' 00"118° 30' 00" 34° 00' 00" 34° 00' 00" 34° 00' 00" 34° 00' 00" 34° 00' 00" 34° 00' 00" 34° 00' 00" 34° 00' 00" 34° 00' 00"
118° 45' 00"118° 45' 00"118° 45' 00"118° 45' 00"118° 45' 00"118° 45' 00"118° 45' 00"118° 45' 00"118° 45' 00" 34° 00' 00" 34° 00' 00" 34° 00' 00" 34° 00' 00" 34° 00' 00" 34° 00' 00" 34° 00' 00" 34° 00' 00" 34° 00' 00"
117° 45' 00"117° 45' 00"117° 45' 00"117° 45' 00"117° 45' 00"117° 45' 00"117° 45' 00"117° 45' 00"117° 45' 00" 34° 00' 00" 34° 00' 00" 34° 00' 00" 34° 00' 00" 34° 00' 00" 34° 00' 00" 34° 00' 00" 34° 00' 00" 34° 00' 00"
117° 45' 00"117° 45' 00"117° 45' 00"117° 45' 00"117° 45' 00"117° 45' 00"117° 45' 00"117° 45' 00"117° 45' 00" 34° 15' 00" 34° 15' 00" 34° 15' 00" 34° 15' 00" 34° 15' 00" 34° 15' 00" 34° 15' 00" 34° 15' 00" 34° 15' 00"
118° 00' 00"118° 00' 00"118° 00' 00"118° 00' 00"118° 00' 00"118° 00' 00"118° 00' 00"118° 00' 00"118° 00' 00" 34° 15' 00" 34° 15' 00" 34° 15' 00" 34° 15' 00" 34° 15' 00" 34° 15' 00" 34° 15' 00" 34° 15' 00" 34° 15' 00"
118° 00' 00"118° 00' 00"118° 00' 00"118° 00' 00"118° 00' 00"118° 00' 00"118° 00' 00"118° 00' 00"118° 00' 00" 33° 45' 00" 33° 45' 00" 33° 45' 00" 33° 45' 00" 33° 45' 00" 33° 45' 00" 33° 45' 00" 33° 45' 00" 33° 45' 00"
118° 30' 00"118° 30' 00"118° 30' 00"118° 30' 00"118° 30' 00"118° 30' 00"118° 30' 00"118° 30' 00"118° 30' 00" 33° 45' 00" 33° 45' 00" 33° 45' 00" 33° 45' 00" 33° 45' 00" 33° 45' 00" 33° 45' 00" 33° 45' 00" 33° 45' 00"
117° 45' 00"117° 45' 00"117° 45' 00"117° 45' 00"117° 45' 00"117° 45' 00"117° 45' 00"117° 45' 00"117° 45' 00" 33° 45' 00" 33° 45' 00" 33° 45' 00" 33° 45' 00" 33° 45' 00" 33° 45' 00" 33° 45' 00" 33° 45' 00" 33° 45' 00"
AltadenaAltadenaAltadenaAltadenaAltadenaAltadenaAltadenaAltadenaAltadena
ArcadiaArcadiaArcadiaArcadiaArcadiaArcadiaArcadiaArcadiaArcadia
ArtesiaArtesiaArtesiaArtesiaArtesiaArtesiaArtesiaArtesiaArtesia
AzusaAzusaAzusaAzusaAzusaAzusaAzusaAzusaAzusa
BellBellBellBellBellBellBellBellBell
BellflowerBellflowerBellflowerBellflowerBellflowerBellflowerBellflowerBellflowerBellflower
Bell GardensBell GardensBell GardensBell GardensBell GardensBell GardensBell GardensBell GardensBell Gardens
BradburyBradburyBradburyBradburyBradburyBradburyBradburyBradburyBradbury
CarsonCarsonCarsonCarsonCarsonCarsonCarsonCarsonCarson
CitrusCitrusCitrusCitrusCitrusCitrusCitrusCitrusCitrus
CommerceCommerceCommerceCommerceCommerceCommerceCommerceCommerceCommerce
ComptonComptonComptonComptonComptonComptonComptonComptonCompton
CovinaCovinaCovinaCovinaCovinaCovinaCovinaCovinaCovina
CudahyCudahyCudahyCudahyCudahyCudahyCudahyCudahyCudahy
GardenaGardenaGardenaGardenaGardenaGardenaGardenaGardenaGardena
GlendoraGlendoraGlendoraGlendoraGlendoraGlendoraGlendoraGlendoraGlendora
HawthorneHawthorneHawthorneHawthorneHawthorneHawthorneHawthorneHawthorneHawthorne
Hermosa BeachHermosa BeachHermosa BeachHermosa BeachHermosa BeachHermosa BeachHermosa BeachHermosa BeachHermosa Beach
Hidden HillsHidden HillsHidden HillsHidden HillsHidden HillsHidden HillsHidden HillsHidden HillsHidden Hills
Huntington ParkHuntington ParkHuntington ParkHuntington ParkHuntington ParkHuntington ParkHuntington ParkHuntington ParkHuntington Park
IndustryIndustryIndustryIndustryIndustryIndustryIndustryIndustryIndustry
InglewoodInglewoodInglewoodInglewoodInglewoodInglewoodInglewoodInglewoodInglewood
LakewoodLakewoodLakewoodLakewoodLakewoodLakewoodLakewoodLakewoodLakewood
La MiradaLa MiradaLa MiradaLa MiradaLa MiradaLa MiradaLa MiradaLa MiradaLa Mirada
La PuenteLa PuenteLa PuenteLa PuenteLa PuenteLa PuenteLa PuenteLa PuenteLa Puente
La VerneLa VerneLa VerneLa VerneLa VerneLa VerneLa VerneLa VerneLa Verne
LomitaLomitaLomitaLomitaLomitaLomitaLomitaLomitaLomita
Marina del ReyMarina del ReyMarina del ReyMarina del ReyMarina del ReyMarina del ReyMarina del ReyMarina del ReyMarina del Rey
MaywoodMaywoodMaywoodMaywoodMaywoodMaywoodMaywoodMaywoodMaywood
MonroviaMonroviaMonroviaMonroviaMonroviaMonroviaMonroviaMonroviaMonrovia
NorwalkNorwalkNorwalkNorwalkNorwalkNorwalkNorwalkNorwalkNorwalk
ParamountParamountParamountParamountParamountParamountParamountParamountParamount
PomonaPomonaPomonaPomonaPomonaPomonaPomonaPomonaPomona
San FernandoSan FernandoSan FernandoSan FernandoSan FernandoSan FernandoSan FernandoSan FernandoSan Fernando
Sierra MadreSierra MadreSierra MadreSierra MadreSierra MadreSierra MadreSierra MadreSierra MadreSierra Madre
Signal HillSignal HillSignal HillSignal HillSignal HillSignal HillSignal HillSignal HillSignal Hill
South WhittierSouth WhittierSouth WhittierSouth WhittierSouth WhittierSouth WhittierSouth WhittierSouth WhittierSouth Whittier
Temple CityTemple CityTemple CityTemple CityTemple CityTemple CityTemple CityTemple CityTemple City
TorranceTorranceTorranceTorranceTorranceTorranceTorranceTorranceTorrance
VernonVernonVernonVernonVernonVernonVernonVernonVernon
Walnut ParkWalnut ParkWalnut ParkWalnut ParkWalnut ParkWalnut ParkWalnut ParkWalnut ParkWalnut Park
West ComptonWest ComptonWest ComptonWest ComptonWest ComptonWest ComptonWest ComptonWest ComptonWest Compton
WhittierWhittierWhittierWhittierWhittierWhittierWhittierWhittierWhittier
WillowbrookWillowbrookWillowbrookWillowbrookWillowbrookWillowbrookWillowbrookWillowbrookWillowbrook
RADON POTENTIAL ZONE MAP FOR SOUTHERNLOS ANGELES COUNTY, CALIFORNIACALIFORNIA GEOLOGICAL SURVEY
JOHN G. PARRISH, PhD., STATE GEOLOGIST
Radon Potential Zone Map for Southern Los Angeles County, California
Ron Churchill
January, 2005
A digital version of the radon zone location layers is available fromthe California Department of Conservation, California Geological Survey, 801 K Street, MS 08-38, Sacramento, CA 95814-3531.Base map derived from U.S. Census Bureau, 2000 TIGER Data.
Copyright © 2005 by the California Department of Conservation,California Geological Survey. All rights reserved. No part of this publication may be reproduced without written consent ofthe California Geological Survey.
Los AngelesCounty
Study Area
Prepared by the California Department of Conservation, California Geological Surveyfor the California Department of Health Services, Environmental Health Division,
January 2005, According to Interagency Agreement DOC #1002-35R.
California Geological Survey
Map Design and Layout by Milton Fonseca
EXPLANATION
Radon Potential Zoning Definitions:
Map Features
Airport
High Potential for Indoor Radon Levels Above 4.0 Picocuries per Liter
Moderate Potential for Indoor Radon Levels Above 4.0 Picocuries per Liter
Low Potential for Indoor Radon Levels Above 4.0 Picocuries per Liter
National Forest
Park
High Potential for Indoor-Radon Levels Above 4.0 Picocuries per Liter in Recent Alluvium (High - Qa)
Special Test Areas - Areas where National Uranium Resource Evaluation (NURE)Project airborne radiometric data suggest rocks and soils contain higher than typicalamounts of uranium but where indoor-radon data are currently unavailable. Follow-up
SPECIAL REPORT 182DEPARTMENT OF CONSERVATION - DEBBIE SAREERAM, ACTING DIRECTOR
indoor-radon testing is recomended for buildings in these areas.
See companion report to this map for further information about these zones.
STATE OF CALIFORNIA - ARNOLD SCHWARZENEGGER, GOVERNORTHE RESOURCES AGENCY - MICHAEL CHRISMAN, SECRETARY FOR RESOURCES
in targeting their radon program activities and resources. This map is not intended for determining which buildings have excessive indoor radon levels.In addition to geology, indoor radon levels can be influenced by local variability
warranty as to actual radon levels at specific sites in Los Angeles County isexpressed or implied by this map or the accompanying report.
This map identifies areas within Los Angeles County where geologicconditions are more likely to contribute to excessive indoor radon levels. It is intended to assist national, state and local governments and organizations
MAP USAGE AND LIMITATIONS
The U.S. Environmental Protection Agency (EPA) recommends that all homesbe tested for radon whatever their geographic location. Homes with elevatedradon levels have been found in all three zones (High, Moderate, and Low)
in factors such as soil permeability and climatic conditions, and by factors suchas building design, construction, condition, and usage. Consequently, building-specific radon levels can only be determined by indoor radon testing. No
within Los Angeles County. The U.S. EPA recommends that action be takento reduce radon in homes with an average annual level higher than four picocuries per liter (4.0 pCi/l).
California Department of Health Services Radon Program,George Faggella, phone (916) 449-5674California Geological Survey, Ron Churchill, phone (916) 327-0745Additional information about radon can be found at the following websites:
California Department of Health Services Radon Program:http://www.dhs.ca.gov/ps/ddwem/environmental/radon/radon.htmCalifornia Geological Survey-Mineral Hazards Project:http://www.consrv.ca.gov/cgs/minerals/hazardous_minerals/radon/index.htm
Questions regarding this map should be directed to:
U.S. EPA: http://www.epa.gov/iaq/radon/
1 0 1 2 3 4 5
Miles
2 0 2 4 6
Kilometers
Scale: 1:100,000