Environmental Risks - Scope

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'risk' danger,thatis, ,riskis interpretedmorenarrowlytomeantheprobabil ityorchanceofsufferinganadverseconsequen ce, 'floodrisk'canrefertothepresenceofa dangerofflooding-a floodhazard,ormorenarrowly,a specificprobabilitysuchasa (alOa-yearflood).Becausetheword'risk' ;thatis, 'environmentalrisk'astheprobabilityvalue ofanundesirableeventanditsconsequencesth atarisefromaspontaneousnaturaloriginorfr omahumanaction(physicaloradministrative) thatis 'impactassessment'and'riskassessment'is thatimpactassessmentsareconcernedwitheve ntsthatarereasonablycertaintooccur,while riskassessmentis 'certain'and'probabilistic' ,theyareusedtodescribetheknownimpactsofv ariousevents, (whichis inpartduetoourincreasedunderstandingofth einterrelationshipofevents), ,assessmentsbegantomakeuseofmathematical techniques, ,thetermriskassessmentcameintobeingtodif ferentiatethenewtypeofassessmentsfromthe earlier'impact' ,modeofanalysis,ormanagement, ,riskis , :(1)Therisksinvolvea , (2) ,region,orcityandthisrequiresanabilityto comparethemandmaketrade-offsorbalancingd ecisionsabouthowmuchofonerisktoacceptinr elationtoanother.

that is, an event or act which holds adverse consequences. In this view the degree of risk is related both to its probability and to the magnitude of its consequences. 1.1.2 Risk As Probability Another school of thought would like to retain the word risk to apply solely to probabilistic statements. This school defines 'environmental risk' as the

  Consequences