Construction and handover environmental management plans  43 (4) A HEMP must be developed and completed by the end of the construction, commissioning  and handover stage of the authorised development, in accordance with the process set out in the  approved CEMP.  (3) The construction of the authorised development must be carried out in accordance with the  approved CEMP and any mitigation, monitoring and adaptive management measures contained in  the approved CEMP must be implemented.  4. —(1) No part of the authorised development is to commence until a CEMP, substantially in  accordance with the outline CEMP, for that part has been submitted to and approved in writing by  the Secretary of State, following consultation with the relevant planning authority and Natural  England to the extent that it relates to matters relevant to their function.  (2) The CEMP must be written in accordance with ISO14001 and must—  (a) be in accordance with the mitigation measures set out in the REAC;  (b) contain a record of all sensitive environmental features that have the potential to be  affected by the construction of the proposed development;  (c) require adherence to working hours of 07:30–18:00 Mondays to Fridays and 08:00–14:00  on Saturday except for—  (i) deliveries, movements to work, maintenance and general preparation works but not  including running plant and machinery for a period of one hour either side of the  above times;  (ii) night-time closures including for road crossings and final surfacing tie ins;  (iii) any oversize deliveries or deliveries where daytime working would be excessively  disruptive to normal traffic operation;  (iv) junction tie-in works;  (v) repair or maintenance of construction equipment;  (vi) removal of overhead power lines;  (vii) overnight traffic management measures;  (viii) cases of emergency; and  (ix) as otherwise agreed by the relevant planning authority in advance;  (d) include the following management plans which must be in accordance with the REAC—  (i) Bird Mitigation Strategy;  (ii) Biodiversity Enhancement Strategy;  (iii) Soil Management Plan;  (iv) Soil Resource Plan;  (v) Noise and Vibration Management Plan;  (vi) Pollution Control Plan;  (vii) Emergency Spillage Response Plan;  (viii) Emergency Flood Response Plan;  (ix) Dewatering Management Plan;  (x) Construction Water Management Plan;  (xi) Site Waste Management Plan;  (xii) Materials Management Plan;  (xiii) Borrow Pit – Restoration Aftercare Plan;  (xiv) Asbestos Management Plan;  (xv) Flood Warning Evacuation Plan. 