; and (9) include any additional information determined appropriate or relevant by the Under Secretary for Management. (c) Implementation policies Not later than 90 days after the development of each of the regional real property strategies developed in accordance with subsection (a), the Under Secretary for Management shall develop or update, as applicable, a Department-wide policy implementing such strategies. (d) Certifications Subject to subsection (g)(3), the implementation policies developed pursuant to subsection (c) shall require component heads to certify to the Under Secretary for Management that such heads have investigated all possibilities related to co-locating, consolidating, or partnering with other components before making any major real property acquisition or recommendation, as defined by the Under Secretary, including entering into any new leases, renewing any existing leases, or agreeing to extend or newly occupy any Federal space or new construction, in accordance with the applicable regional real property strategy developed in accordance with subsection (a). (e) Underutilized space (1) In general The implementing policies developed pursuant to subsection (c) shall require component heads, acting through regional property managers under subsection (f), to annually report to the Under Secretary for Management on underutilized space and identify space that may be made available for use, as applicable, by other components or Federal or State agencies through reimbursable or other agreements. (2) Exception The Under Secretary for Management may grant an exception to the workspace standard net usable square foot ranges described in subsection (b)(6) for specific office locations at which a reduction or elimination of otherwise underutilized space would negatively impact a component’s ability to execute its mission based on readiness performance measures. (3) Underutilized space defined In this subsection, the term underutilized space means any space with respect to which utilization is greater