Installation/activity

Observations

Site plan

Are scale and compass arrow accurate?

Present land use
Previous land use

Buildings, activities, washing facilities, storage, etc.
Later additional buildings (if applicable)

Land use of adjacent sites

Buildings, activities, storage, etc.

Ventilation nozzles/flanges

Number, location

Tanks/covers

Location
Tank No.
Datum level of tank bottom
Volume/diameter
Spillage at filler connection
Product
Product amount in reservoir

Oil/petrol separators

Condition/location

Sewerage and drain

Location, signs of contamination

Pumping islands/other installations

Location, signs of contamination
Look for concrete foundations or other types of paving (at individual stand)

Other signs of contamination

Discoloration
Odours
Damage to vegetation

Buildings

Construction/Condition
Basement
Foundation
Washing hall
Greasing pit
etc.

Paving

Types
Signs of breakage/new asphalt
Concrete underneath asphalt
Is breakage necessary by field work?

Access

Shed roofs and sheds
Gates and fences
Storage
Trees, shrubbery, etc.
Overhead lines

Topography

Estimated flow direction of aquifers near ground level
Alterations to the terrain

Nearby recipients

Oil film

Other information

Interviews with site owners etc.