He mahi tino tupato, he mahi uaua hoki te tāuta me te whakahaere i ngā taputapu, he mahi whaihua hoki, e pā tika ana ki te ekenga o te wheketere ki te paerewa whakaputa. Ka pā tika te tāutanga o ngā taputapu paerewa ki te mahi a ngā taputapu. Ka pā tika te tāutanga me te hanga o ngā taputapu kore-paerewa ki te pumau o te pūnaha katoa.
Ka whakahaerehia te whakangungu o ngā kaimahi me te tāutanga me te whakatūnga i te wā kotahi, ka taea ai te penapena i te utu o te wā hanga mō ngā kiritaki.E rua ngā kaupapa o te whakangungu mahi:
1. Kia taea ai te whakatū i te tipu whai hua o ā mātou kiritaki i te wā e taea ai kia whiwhi ai i ngā hua.
2. Hei whakangungu i ngā tīma hangarau a ngā kiritaki, me te whakarato taurangi mō te mahi noa o te tipu whakangao.
Ko ngā ratonga EPC tae atu ki: te whakatutuki i te kaha whakaputa kua hangaia mō te tipu painga o ngā kiritaki, te whakatutuki i te matotoru o te hua e tumanakohia ana, te kounga o te hua e tutuki ana i ngā whakaritenga, te taupū hoahoa o te reiti whakaora me ngā taupū kai katoa e tutuki ana i ngā whakaritenga, te whakahaere tika i te utu whakaputa, ā, ka taea e ngā taputapu tukatuka te mahi pumau.
