(a) The pesticide applicator shall be responsible for complying with the following standards:(1) Pesticides may not be applied if persons not involved with the application of the pesticide are lawfully present in the area to be treated.(2) The applicator shall stop the application of a pesticide if any person not wearing appropriate protective clothing lawfully enters the area to be treated.(b) It is a violation of these regulations for any person employed by a farm operator to knowingly enter an area to which pesticides have been applied and the restricted-entry interval has not expired or to which pesticides are being applied, except as permitted by the label or federal WPS.