Development of natural landforms generally results in an increase in impervious surfaces and an increased traffic flow. This results in a significant increase in the volume of stormwater runoff from the area and an increase in the rate at which the peak discharge occurs. In addition, the resultant stormwater has a higher probability of being contaminated with suspended solids or chemicals, oils and greases etc. Through well designed and instigated stormwater management practices and utlising a treatment train approach the impact of development on aquatic waterways is significantly reduced. Ormiston Associates Ltd cover all aspects of stormwater treatment from residential developments through to commercial and industrial practices.

Construction of an extended detention stormwater treatment pond for proposed commercial venue centre

Settlement ponds for a Lime Processing Plant. Process water contains lime and coal dust which requires removal prior to discharge. An outlet flume showing dilution and mixing on discharge to receiving waters.