R44 RAVEN I Landing and takeoff creates sandstorm at construction site

Robinson s R44 RAVEN I helicopter landing and takeoff at the KH construction site in Pyhäjoki, Finland. Helicopter s specifications: Engine Lycoming O540, six cylinder, carburetted Horsepower Derated to 225 for takeoff and 205 continuous Max Gross Weight 2400 lb (1089 kg) Approximate Empty Weight (including oil std avionics) 1437 lb (652 kg) Standard Fuel (29. 5 gal) 177 lb (80 kg) Auxiliary Fuel (17. 0 gal) 102 lb (46 kg) Pilot, Passengers and Baggage with Standard Fuel 786 lb (357 kg)