Mae'r adroddiad a luniwyd gan yr Earth Science Partnership (ESP) (dolen allanol), yr arbenigwyr a gomisiynwyd gan Gyngor Castell-nedd Port Talbot, yn nodi bod yna risg lefel ganolig yn sgil tomen rwbel chwarel ger yr ysgol y mae dŵr daear yn effeithio arni. Canfu ymchwiliadau ESP, pe bai'r nant yn blocio yn sgil tywydd difrifol, y gallai lefelau a phwysau'r dŵr yn y domen yrru'r deunyddiau i lawr y tir.
The report provided by Earth Science Partnership (ESP) (external link), the experts commissioned by Neath Port Talbot Council, identifies a medium level risk from a quarry spoil tip near the school which is affected by groundwater. ESP’s investigations found that if the stream became blocked as a result of a severe weather event, there is a possibility that water levels and pressures in the tip could induce materials to flow downhill.