In the interest of efficiency and cost-effectiveness, existing systems of customs control, surveillance and monitoring already established by Union law should be applied, in particular those set out in Directives 92/43/EEC, 2000/60/EC, 2008/56/EC and 2009/147/EC.
Ar mhaithe le héifeachtúlacht agus éifeachtacht ó thaobh costais de, ba cheart na córais atá ann maidir le rialú custam, faireachán agus faireachas a bunaíodh cheana féin i ndlí an Aontais a chur i bhfeidhm, go háirithe na córais sin a leagtar amach i dTreoracha 92/43/CEE, 2000/60/CE, 2008/56/CE agus 2009/147/CE.