the value of all the supplies and services that are made available to the concessionaire by the contracting authority provided that they are necessary for executing the works or services;
luach na soláthairtí agus na seirbhísí go léir a chuireann an t-údarás conarthach ar fáil don lamháltóir ar an gcoinníoll go bhfuil siad riachtanach chun na hoibreacha nó na seirbhísí a chur i bhfeidhm;