CHMM Exam Study Guide Questions and Answers Updated 2026

CHMM Exam Study Guide
Questions and Answers Updated
2026
P2A-
AAnswerAPollutionAPrevention,AtheAhighestApriorityAisAsourceAreduction,AtheAmostAeffectiveA
P2AactivityAisAproductAmodificationAtoAavoidAsolventAuse



PDCAA-AAnswerAPlan,ADo,ACheck,AActA(P2)



HAPA-AAnswerAHazardousAAirAPollutant



MACTA-AAnswerAMaximumAAchievableAControlATechnology



TSDFA-
AAnswerATransport,AStorage,ADisposalAFacility,AisArequiredAtoAhaveAaAwasteAtrackingAprogra
m,AaAtrainingAplan,AarrangementsAwithAemergencyAresponders,AanAemployeeAonsiteAatAallAti
mes



NPDESA-AAnswerANationalAPollutionADischargeAEliminationASystem



SWPPPsA-AAnswerAStormwaterApollutionApreventionAplans



WasteAManagementAHierarchyA-
AAnswerA1.APreventAorAreduceA2.ARecycleA3.ATreatA4.ADisposeAorAotherwiseArelease



AEAA-AAnswerAAtomicAEnergyAAct



RCRAA-
AAnswerAResourceAConservationAandARecoveryAAct,AcoversAgenerationAofAhazAwaste,Atransp
ortationAofAhazAwaste,AUSTs,AandAnon-hazAsolidAwaste



ALARAA-AAnswerAAsALowAAsAReasonablyAAchievableA(AEA)

,LDRsA-AAnswerALandADisposalARestrictionA(RCRA),AmeantAtoAminimizeApost-
closureAescapeAofAwaste,AreducesAtheAvolumeAofAhazAwasteAdisposal,AencouragesArecycling



MTRsA-
AAnswerAMinimumATechnologyARequirementsA(RCRA),AincludingAlinerArequirements,AleakAdete
ctionAandAcollectionArequirements,AgroundwaterAmonitoring



CAMUA-
AAnswerACorrectiveAActionAManagementAUnitA(RCRA),AneedsAtoAassessAenvironmentalAandAh
ealthArisks,AifAitAwillAenhanceAtheAtimelinessAofAremediation,AwillAminimizeAtheAlandAutilized
AforAfinalAdisposal,AwillAprovideAexpeditiousAimplementationAofAsiteAremedies



TUA-AAnswerATemporaryAUnitA(RCRA)



RIA-AAnswerARemedialAInvestigation



CMSA-AAnswerACorrectiveAMeasuresAStudyA(RCRA)



IMA-AAnswerAInterimAMeasures



RFIA-AAnswerARCRAAFacilityAInvestigation



SWMUA-AAnswerASolidAWasteAManagementAUnitA(RCRA)



HSWAA-AAnswerAHazardousAandASolidAWasteAAmendmentsA(expandedARCRA)



CAA-
AAnswerACorrectiveAActionA(HSWA),ArequiresAidentificationAofAallASWMUsAonAaAsiteAbeforeAi
ssuanceAofAaAPartABApermit,AaAcomprehensiveAgroundwaterAmonitoringAprogram,AcanArequir
eAclean-
upsAoutsideAaAfacilitiesAboundary,AprovideAforAtemporaryAtreatmentAunits,AhasAanAadditional
AsectionAinAaAfinalApermitArequiringAfurtherAsiteAclean-ups



UsedAOilA-
AAnswerAArsenicA(5AppmAmax),ACadmiumA(2AppmAmax),AChromiumA(10ppmAmax),ALeadA(10
0AppmAmax),ATotalAHalogensA(4000AppmAmax),AFlashApointA(100oFAminimum)

, NIOSHA-
AAnswerANationalAInstituteAofAOccupationalASafetyAandAHealth,AconductsAresearchAinAoccupa
tionalAsafetyAandAhealth,AdevelopAcriteriaAasAaAbasisAforAnewAstandards,AprovidesAeducation
,AmanpowerAdevelopmentAandAtrainingAonAhealthAandAsafetyAequipment,AenforcesAoccupatio
nalAhealthAandAsafetyAguidelines.



TLVA-AAnswerAThresholdALimitAValue



CeilingAValueA-AAnswerAAnAabsoluteAvalueAwhichAcannotAbeAexceededA(noATWA)



NucleusA-AAnswerATheAcenterAofAanAatomAmadeAupAofAaAprotonAandAaAneutron



IonizationA-AAnswerAtheAremovalAofAelectronsAfromAanAelectricallyAneutralAatom



TDSA-AAnswerATime,ADistance,AShieldingA(waysAtoAreduceAexposureAtoAradiation)



AlphaAparticleA-
AAnswerASlowest,AlargestAradioactiveAparticle.AMostAdestructiveAifAinhaledAorAingested.ACanA
beAstoppedAbyApaper/tyvek.AMadeAupAofAaAprotonAandAneutron.



BetaAparticleA-
AAnswerACanAbeAstoppedAbyAplastic/aluminumAfoil.ACanAtravelAupAtoAfourAfeetAfromAsourc
e.AMadeAupAofAanAelectron.



Half-livesAtoAgetAtoA12.5%AofAoriginalAradionuclideA-
AAnswerAThree.A100A(one)A50A(two)A25A(three)A12.5



ToxinA-
AAnswerAanyAsubstanceAthatAwillAproduceAaAharmfulAeffectAwhenAintroducedAtoAtheAbodyAi
nAsufficientAconcentrations,AcreatesAaAtoxicAeffectAwhenAaAmechanismAisAavailableAtoAallow
AaAbiochemicalAreactionAatAaAreceptorAsiteAinAtheAtargetAorgan



LD50A-AAnswerALethalAdoseA50%