The scope of work includes but is not limited to; removal of existing vegetation and materials in areas to be repaired, regrading of the low spots in the perimeter access road and side slopes resulting from surface settling due to organic materials decomposition, resetting of HDPE drain pipes and rat screens, repairs to exposed LLDPE liner with new liner, installation of aggregate in regraded access road and riprap channels, installation of hydroseeding and temporary irrigation, removal and replacement of malfunctioning condensate sumps and associated utilities, caping and abandoning some landfill gas (LFG) piping and associated utilities, installation of new HDPE LFG headers system, removal and replacement of existing vault box and isolation valves, and removal, regrading and installation of four new ripraps from stormwater letdown structures. This work may require flare shutdowns and startups coordinated with City staff which has the potential for hazardous or explosive gases emissions.
