▁those ▁at ▁a ▁control ▁location . ▁ ▁The ▁animal ▁sample ▁was ▁a ▁follow - up ▁to ▁an ▁earlier ▁study ▁that ▁found ▁elev ated ▁lead ▁and ▁cad m ium ▁levels ▁in ▁m oss es ▁near ▁the ▁road . ▁The ▁cont am ination ▁is ▁attributed ▁to ▁dust ▁blow n ▁from ▁tr uck s ▁on ▁the ▁ha ul ▁road . ▁Following ▁the ▁first ▁study ▁changes ▁were ▁made ▁to ▁the ▁tr uck s ▁to ▁contain ▁dust ▁and ▁a ▁sampling ▁program ▁was ▁put ▁into ▁effect ▁to ▁monitor ▁dust ▁release . ▁ ▁History ▁and ▁administration ▁Cape ▁Kr us enst ern ▁National ▁Monument ▁was ▁established ▁as ▁one ▁of ▁fifteen ▁new ▁National ▁Park ▁Service ▁properties ▁established ▁by ▁the ▁Al aska ▁National ▁Interest ▁Land s ▁Conserv ation ▁Act ▁( AN IL CA ) ▁of ▁ 1 9 8 0 . ▁It ▁was ▁first ▁declared ▁a ▁national ▁monument ▁by ▁President ▁Jimmy ▁Carter ▁on ▁December ▁ 1 , ▁ 1 9 7 8 ▁using ▁his ▁authority ▁under ▁the ▁Anti qu ities ▁Act ▁when ▁Cong r essional ▁negoti ations ▁on ▁the ▁proposed ▁AN IL CA ▁bill ▁were ▁st alled . ▁AN IL CA ▁was ▁finally ▁passed ▁in ▁ 1 9 8 0 , ▁and ▁signed ▁by ▁Carter ▁on ▁December ▁ 2 , ▁ 1 9 8 0 . ▁As ▁is ▁the ▁case ▁in ▁most ▁national ▁park ▁lands ▁in ▁Al aska , ▁subs istence ▁hunting ▁by ▁local ▁residents ▁is ▁permitted . ▁No ▁part ▁of ▁the ▁monument ▁is ▁designated ▁as ▁a ▁national ▁preserve , ▁which ▁would ▁allow ▁sport ▁hunting . ▁About ▁ 1 9 % ▁of ▁monument