This type of sand around in the lowlands of the River caused by the flow of water from the Patras blew the sedimentation in lowlands as source of sand used in construction because it is the cleanest sand granules with different size corner are perfect squares through a sieve and sift the construction such as the masonry structure. The cement formation Section of river sand with a mixture of organic compounds is very dark brown to black, the Chancellor has contaminated the building did not, but be sprinkled on the soil before using land reclamation and the lawn because there is a price to be called sand reclamation.