referred to arbitration in accordance with paragraph 118 (arbitration) of this Part of this Schedule  and the arbitrator must make such provision for the payment of compensation by the undertaker to  SGN as appears to the arbitrator to be reasonable having regard to all the circumstances of the  particular case.  112. —(1) Not less than 56 days before the commencement of any specified works, the  undertaker must where reasonably required by SGN submit to SGN a plan and, a ground  monitoring scheme in respect of those works.  (2) In relation to works which will or may be situated on, over, under or within (a) ten metres  measured in any direction of any apparatus, or (b) involve embankment works within ten metres  of any apparatus, the plan to be submitted where reasonably required to SGN under sub-paragraph  (1) must include a method statement and describe—  (3) The undertaker must not commence any works to which sub-paragraphs (1) and (2) apply  until SGN has given written approval of the plan so submitted.  (4) Any approval of SGN required under sub-paragraph (3)—  (5) In relation to any work to which sub-paragraphs (1) and/or (2) apply, SGN may require such  modifications to be made to the plans as may be reasonably necessary for the purpose of securing  apparatus against interference or risk of damage or for the purpose of providing or securing proper  and convenient means of access to any apparatus.  (6) Works to which this paragraph applies must only be executed in accordance with the plan,  submitted under sub-paragraph (1) and (2) or as relevant sub-paragraph (4), as approved or as  amended from time to time by agreement between the undertaker and SGN and in accordance with  all conditions imposed under sub-paragraph (4)(a), and SGN will be entitled to watch and inspect  the execution of those works.  (7) Where SGN requires any protective works to be carried out by itself or by the undertaker  (whether of a temporary or permanent nature) such protective works, inclusive of any measures or  schemes required and approved as part of the plan approved pursuant to this paragraph, must be  carried out to SGN’s satisfaction prior to the commencement of any authorised works (or any  relevant part thereof) for which protective works are required and SGN must give 45 days’ notice  of such works from the date of submission of a plan pursuant to this paragraph (except in an  emergency).  (8) If SGN, in consequence of the works proposed by the undertaker, reasonably requires the  removal of any apparatus and gives written notice to the undertaker of that requirement,  paragraphs 104 to 106 and 109 to 111 apply as if the removal of the apparatus had been required  by the undertaker under sub-paragraph 110(2).  (9) Nothing in this paragraph precludes the undertaker from submitting at any time or from time  to time, but in no case less than 56 days before commencing the execution of the authorised  works, a new plan, instead of the plan previously submitted, and having done so the provisions of  this paragraph will apply to and in respect of the new plan.  111 (a) the exact position of the works;  (b) the level at which these are proposed to be constructed or renewed;  (c) the manner of their construction or renewal including details of excavation, positioning of  plant etc.;  (d) the position of all apparatus;  (e) by way of detailed drawings, every alteration proposed to be made to or close to any such  apparatus; and  (f) any intended maintenance regimes.  (a) may be given subject to reasonable conditions for any purpose mentioned in sub- paragraphs (5) or (7); and  (b) must not be unreasonably withheld.  Retained apparatus: protection of SGN 