you missed mine. If a cop pull you over and you smell of pot does the officer need a warrent to search your car?
its the same thing here, she saw the piles of dirt from the street and I'm sure she smelled it. There were also reports from people close by telling exactly what he was doing.
if you work in the trades for any length of time, you will be able to spot work being done a mile away.
Motor vehicles have an exception that was just tightened under the recent Supreme Court Ruling - Gant vs. Arizona. Motor vehicles have a lower threshhold because of their mobility.
A leach field in a yard is another story. You said they had the court order to inspect, I will take your word on it, but if not, I would have told the young lady to get the court order, it would not have taken long and should have been done the day before when he would not let her on during her first visit. Sometimes people are lazy and think the police can get people to do things because they are there.
There are seven recognized exceptions to warrant requirements:
1.) exigent circumstances which includes:
a.) imminent danger or destruction of material evidence
b.) escape of the criminal suspect
c.) immediate changes or injury to the officer or public
2.) search incident to an arrest,
3.) impounded/ inventory searches of vehicles,
4.) plain view,
5.) caretaker function,
6.) motor vehicle exception,
7.) consent
One other observation, the guy had piping commonly used in leach fields at the curb with his garbage, which does not give him the right to privacy and can be seized. Police do garbage pulls all the time in drug investigations.
Hope this adds to the discussion.