No Problem Rachel.
 Just calculate the full cost of correcting a catastrophic spill in under 30 days, plus the cost of restoring all land touched to its original biodiversity once you are done and place that amount in a cash bond before the first shovel is turned. Then I will have no problem with you transporting your toxic swill across the land I value.
(spoiler alert - you will find this figure above prohibitively expensive. I totally agree. The difference is I want you to pay it upfront and you want me to pay it later.)