When Andy is in the hospital, his IV is under his ID bracelet. The ID bracelet is placed first upon arrival at the hospital, and thus the IV would not be under it.
Around 1 1/2 minutes, Leslie states (during a talking head interview) "Well we're here in Eagleton, it's two towns over, and we're volunteering for Kaboom!" Later seasons reveal that Eagleton and Pawnee border each other, and several later episodes take place at the Eagleton/Pawnee border. At this point in the shows run, the show-runners had not ironed out the details of Eagleton, which is the cause of this geographic error.
It is unlikely that the dump truck driver would not ask them to clear the pit before starting.