11. Some landfill designs allow for leachate capture, which would need to be treated. 12. It operates a leachate collection system and an on-site leachate treatment plant. 13. It operates a leachate collection system and an on-site leachate treatment plant. 14. Handling the leachate poses even greater difficulties. 15. Leachate removal controls moisture levels, which is necessary to ensure rapid, aerobic composting.16. A more significant risk may be the failure or abandonment of the leachate collection system. 17. It is not acceptable that leachate contaminated with these harmful compounds may escape from stockpiles. 18. The bedrock is shallow, and leachate was visible on all major slopes at the landfill. 19. Leachate sampling at the base of the refuse slope confirmed the presence of toxic organic chemicals.20. In addition, local residents reported seeing leachate flowing into an unnamed creek along Andrew Avenue.