Suitable Species— Shallow rooted, adapted to anaerobic conditions. Cultural Methods— Adequate lime, fertilizer, top soil for cover, irrigation. Soil Amendments— Shredded refuse, mulch, sewage sludge. Landfill Construction— Proper grading, compaction, adequate depth and quality of top soil. Planting Techniques— Vented or lined trenches, mounds, subsurface gas seals. Gas Collection— Extractor wells and evacuation pumps.
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