9.—(1) No stage of the authorised development may commence until, for that stage, a tree and hedgerow protection strategy (THPS) as referred to in requirement 6 (construction management plans to be approved) and prepared in accordance with the Arboricultural Impact Assessment report (Document 5.3.3I) and BS 5837:2012 (Trees in relation to design, demolition and construction) identifying the trees and groups of trees to be retained during that stage has been submitted to and approved by the relevant planning authority.
(2) The THPS referred to in paragraph (1) must include—
(a)tree protection plans detailing the alignment of temporary physical tree protection measures according to BS 5837:2012;
(b)a schedule of all proposed tree and hedgerow removal and management;
(c)specifications for temporary physical protection for trees; and
(d)details of an auditable system of compliance with the approved protection measures.
(3) The relevant stage of the authorised development must not commence until the approved protection measures referred to in paragraph (1) are in place, and they must thereafter be maintained during the construction of the relevant stage of the authorised development unless otherwise agreed in writing with the relevant planning authority.