Table 8.53 -- ECs in the SURFACE_MATERIAL group

EC labels

AIRCRAFT_PARKING_FACILITY AIRCRAFT_STORAGE_TRACT ALKALI_FLAT APRON
CHEMICAL_HAZARD_REGION DISTURBED_SOIL ESKER EXPOSED_BEDROCK
FILTRATION_BED FROZEN_PRECIPITATION_FIELD GROUND_SURFACE_ELEMENT HARD_STANDING
HOAR_FROST ICE_GLAZE ICE_PEAK MORAINE
PERMAFROST RADIOLOGIC_HAZARD_REGION RIME ROCK
ROCKY_LANDMARK ROCKY_OUTCROP SABKHA SALT_PAN
SAND_BAR SAND_DUNE SAND_DUNE_REGION SAND_LINE
SNOW_FIELD SOIL WATER_TREATMENT_BED  

separator bar

http://www.iso.ch/iso/en/ittf/PubliclyAvailableStandards/ISO_IEC_18025_Ed1.html