The BioAusable Team met at Plattsburgh State at our lab and washed sand for the biosand filters. Other teams met and worked on their assignments.
To wash sand, the members first needed to separate the gravel and non-sand particulate matter. They took some sand and placed it in a plastic kitchen food colander. Warm water was added to the sand and the sand was agitated by hand. The sand and water went through the colander into a bucket below and gravel and rocks remained in the colander. The gravel and rocks were placed in a separate bucket. The process was continued until the collection bucket was filled with sand. The sand was then scooped up