Here ya go:
802.03 Excessive Time A. 2.
1 After the previous player has thrown; and,
2 After they have had a reasonable amount of time to arrive at and determine the lie; and,
Arrive at and determine the lie. If there is a discussion with a card mate if it a legal stance, that does not eat into the 30 seconds. That would be part of determining the lie correct?
If it takes the player 45 seconds to get through the bush and get to the lie, then the 30 seconds starts, as long as someone on the card announces they are starting the 30 second clock.