25 CFR §162.514

1. (a)A WEEL anticipates the installation of facilities and associated infrastructure of a size and magnitude necessary for evaluation of wind resource capacity and potential effects of development. These facilities and associated infrastructure are considered permanent improvements. An equipment installation plan must be submitted with the lease under § 162.528(g).
2. (b)If any of the following changes are made to the equipment installation plan, the Indian landowners must approve the revised plan and the lessee must provide a copy of the revised plan to BIA:
   1. (1)Location of permanent improvements;
   2. (2)Type of permanent improvements; or
   3. (3)Delay of 90 days or more in any phase of development.