Leachate Drainage Layer Stone (Landfill)

Daviess County Fiscal Court is seeking a qualified vendor to supply approximately 30,000 tons of washed river gravel (or documented equivalent) meeting the bid specifications to the West Daviess County Landfill. This material will make up a 1' leachate drainage layer of stone that will be placed above the synthetic liner of the 16.6 acre Subtitle D Landfill Cell that is currently being constructed. The washed river gravel (or documented equivalent) that will make up the leachate drainage layer of stone shall meet the following requirements: a. Classified as gravel according to USCS by ASTM C-136/C-117 b. Have a minimum permeability of 1x10-2 cm/sec by ASTM D-2434 c. No adverse impact on the gravel when in contact with municipal solid waste leachate by ASTM D-3042 modified to use pH 4 d. 100% passing a 3" screen e. No more than 4% passing a #4 sieve f. Less than 1% shall pass a #200 sieve.

Division 32 -

Exterior Improvements, Base Courses, Aggregate Surfacing.