I am presuming that this is construction & with all due respect how did the co win a contract in a forest without previous experience? start with your normal day to day site establishment system and then appraise it with regards to all the environmental interfaces that there are/that are likely to be present e.g. people who like to hug trees; at the location and then account for all things therein in your final site establishment system NB: there may be a smoking/vapouring ban even though its in an outside location so question the client to get your info