2 odorous permitted stockpiled material shall be placed remote from air sensitive receivers . any odorous stockpiled material left in excess of two days shall be covered with tarpaulin sheets 任何带有难闻气味的容许堆存物料,须放于远离易受空气污染影响的地方。任何带有难闻气味的堆存物料,堆存多于2天,必须以防水帆布盖好。