(a) Each ROW or RUE grant will have a preliminary term of 12 months from the date of issuance of the ROW or RUE grant within which to submit a GAP. The preliminary term begins on the effective date of the grant. You must submit a GAP no later than the end of the preliminary term for your grant to remain in effect. However, you may submit a GAP prior to the issuance of your ROW or RUE grant.

(b) Except as described in paragraph (a) of this section, your ROW grant or RUE grant will remain in effect for as long as the associated activities are properly maintained and used for the purpose for which the grant was made, unless otherwise expressly stated in the grant.