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c. Low Risk Elm Trees: Los risk elm tree~ shall be those <br />trees that ~ho~ early ~%ages of infection in June or'subsequently <br />bzyond the 30 percent wilting point. Every reasonable effort <br />shall be made to have low risk trees removed within 20 days of <br />notif~ *' <br /> .caslon of the property o~ner, but in no case shall ~t be <br />later than April 1 of the 5'ear fo!lo~ing the appearance of <br />s]~ptoms. <br /> <br /> d. Oak Trees: All' oak trees within'the designated oak <br />wilt control area of the city diagnosed as having oak ~i!t should <br />be isolated from neighboring hea!~hy oak trees of the same <br />species by chemical cr mechanical dis~zption cf co~on roo~ <br />systems to prevent root graf~ transmission of the oak <br />fungus. <br /> <br />To control the overland spread cf oak ~i!t, the pruning of <br />oaks shall be avoided during the most susceptible period cf <br />l..~ec~=on,'~ ~ from Aoril. !5 until July I. _~f ~oundinz~ is <br />unavoidable during this period, as in the aftermath 'of a storm cr <br />%'hen the tree interferes with uti!i~y lines, a tree wound <br />dressing shall.be cuD!led ~-m ~-~ ~v <br /> <br /> !. To prevent the oak wilt fungus from producing <br />spores and to prevent overland spread cf this fungus, any <br />diseased material of the red oak group wi!ting in July and <br />August cf ~ne yemr shall be declared hazardous the ~o!lowing <br />spring, from April i5, until Ju!y. 1. <br /> <br /> Any hazardous oak wood to be used as fuel %~ood cr to be <br />salvaged for other purposes must be debarked cr else <br />c~mp!ete!y covere~ by. heavv. .re!as%it (4 ...__-:~ or greater) _-~-~m <br />~..~_'--:~=_ !5 un5~. __ ju!v. ! cf %he year cc. !~s%'ing~' th~ appearance <br />cf sa~.pZoms. After ~his ~ime there is no..dan~er cf spsre <br />' ' - '" ~c~ d~ss n~ nes~ t~ be covered. <br /> <br />=-- ~- _Err_ <br /> <br />7! <br /> <br /> <br />