(a) The department may decline to issue a letter confirming that an environmental review document is administratively complete and ready for technical review only if the department sends a written response to the local government sponsor specifying in reasonable detail the basis for its conclusions, including a listing of any required information determined by the department to be missing from the document.
(b) If the department provides notice under Subsection (a), the department shall undertake all reasonable efforts to cooperate with the local government sponsor in a timely manner to ensure that the environmental review document is administratively complete.

(c) The local government sponsor may resubmit any environmental review document determined by the department under § 201.757 not to be administratively complete, and the department shall issue a determination letter on the resubmitted document not later than the 20th day after the date the document is resubmitted.