Due to the unearthing of soil during construction red sandstone and clay strata were exposed. With the high probability of rainfall these unearthed materials had great potential to pollute an array of nearby water courses. Over land water flow would wash over the exposed areas creating turbid water containing a high volume of suspended solids from mud and clay. Sediment loads would increase into water courses, reducing light penetration and oxygen levels, as such aquatic flora and fauna would be effected. The inherent probability of fish deaths were of concern particularly with prolonged exposure to this form of water pollution.