Certificate of proposed Lawfulness for the temporary storage of excavated materials with a maximum height of 4 metres on land outside of HS2 Act limits, at Ashwells Farm, Chalfont St Peter arising from the Chalfont St Peter vent shaft works that cannot be accommodated within the HS2 Limits of Land to be Acquired or Used (LLAU). This will include excavated materials from the temporary construction access road (PL/19/2726/FA).