KUCHING: Sarawak’s Natural Resources and Environment Board (NREB) plans to recommend new guidelines for determining suitable buffer zones along rivers to reduce water pollution.
It has just completed a study on the effectiveness of buffer zones in improving river water quality and reducing the incidence of silt entering waterways, NREB controller Peter Sawal said after opening a workshop yesterday.
He said the study, which was jointly conducted with Chemsain Konsultant Sdn Bhd, also developed tools to determine the optimum size of buffer zones based on soil type, slope steepness, vegetation cover and river width.
Buffer zones are areas on both sides of the river which are left intact with vegetation cover such as grass or secondary forest to trap silt from entering the waterway.
Wednesday October 21, 2009- The Star