43 CFR §3191.5-1

1. (a)No activity under a delegation made under this subpart may be carried out on Indian lands without the written permission of the affected Indian tribe or allottee.
2. (b)A State requesting a delegation involving Indian lands shall provide, as evidence of permission, a written agreement signed by an appropriate official(s) of the Indian tribe for tribal lands, or by the individual allottee(s) or their representative(s) for allotted lands. The agreement shall at a minimum specify the type and extent of activities to be carried out by the State under the agreement, and provisions for State access to carry out the specified activities.
3. (c)Delegations covering Indian lands shall be separate from delegations covering Federal lands.