Generic brief for an archaeological evaluation (trial trenching)

"The definition of archaeological field evaluation is a limited programme of non-intrusive and/or intrusive fieldwork which determines the presence or absence of archaeological features, structures, deposits, artefacts or ecofacts within a specified area or site on land … or underwater. If such archaeological remains are present Field Evaluation defines their character, extent, quality and preservation, and enables an assessment of their worth in a local, regional, national or international context as appropriate." (CIfA, 2014)