3.03.05. Unless he has sound and reasonable grounds to the contrary, a land surveyor may not cease to act for the account of a client. The following shall, in particular, constitute sound and reasonable grounds:
(a) loss of the client’s confidence;
(b) the fact that the land surveyor is in a situation of conflict of interest or in a situation such that his professional independence could be called in question;
(c) the fact of being incited by the client to perform illegal, unfair or fraudulent acts;
(d) refusal on the client’s behalf to pay for the part of the work already carried out where there was an agreement to that effect.