This document outlines the chemical, physical, and biological data quality assurance standards by which the sampling and analysis efforts shall be conducted at the Laboratories of the High Institute of Public Health, Environmental Health Dept.This document presents the detailed site-specific field and laboratory procedures to be followed, to insure the quality and integrity of the sampling and the analytical procedures adopted during the conduct of the Lake Marioul Study. The data will be further used in the environmental impact assessment of the treated waste discharge to the Lake, which will be the final recipient of the primary treated combined industrial and domestic wastewater effluent.