BACKGROUND AND OBJECTIVE(S): THE LANDFILL LEACHATE CONTAINS VARIOUS CONTAMINANTS AS A RESULT OF THE RELEASE OF LEACHATE INTO CITY OF TABRIZ. LANDFILL IS AN IMPORTANT ENVIRONMENTAL AND HEALTH ISSUE. HAVING A POPULATION OF MORE THAN 1900, 000 AS WELL AS FOUR MUNICIPALITY DISTRICTS, THE SOLID WASTE GENERATION RATE IS APPROXIMATELY MORE THAN 1200 TONS/DAY IN TABRIZ CITY...