We might often heard an earthwork plan and drainage plan. Escp is another plan that important before construction work is permitted by local authority called developmenr order. Department of drainage and irigation is responsible to review the document.
The escp can only prepared by profesional engineer that has certified CPESC by Envirocert. In malaysia, it controlled by Malaysia stormwater organization (MSO).
Department of environment make escp as requirement in every EIA approval condition shows how critical and serious this matter.
Study has shown that quality of river has deteriorate due to development new area for agriculture, lodging and urbanization. Total suspended solid is the main issue and sudden increase is observed after heavy rain. Tss is due to exposed area from uncontrol clearing work.
Implement of escp really helpfull in reducing the impact of sedimentation in river. Our country which have constant rain with an average of 3000mm per year really should tackle this issue properly.
General practice is to built big sediment pond, but the truth is. It totally wrong. I will explain why next time. Through experiment and observation, the best way is to have less disturbance to our nature, use natural way called aa bioengineering, and design base on natural condition. If not, we might face natural disaster, or higher maintenance cost
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