|
Polk County Construction of Class 1, Phase V Disposal Facility at North Central Landfill.
<br /> Construction of an approximately 30-acre landfill with double liner and leachate collection and removal
<br /> systems, sub base, earthwork, pumping stations, piping, roadways, stormwater management, paving
<br /> and ancillary components.
<br /> The Phase V footprint covered both a lateral expansion and vertical expansion. The 28.15-acre lateral
<br /> expansion used a double liner system that collects leachate on the primary, top geomembrane and
<br /> collects leakage through the primary liner onto the secondary, bottom geomembrane. A geosynthetic
<br /> clay liner (GCL) underlies the secondary geomembrane. All geomembranes are high-density
<br /> polyethylene (HDPE). HDPE geonets with polypropylene geotextiles on both sides (Geocomposite) lie
<br /> between the primary and secondary liners and on top of the primary liner. 2,718,964sf of HDPE,
<br /> 2,596,127sf of Geocomposite
<br /> The work included clearing, grubbing, and stripping, site demolition, and the construction of a
<br /> stormwater system including the installation of drainage structures, drainage RCP pipe, concrete ditch
<br /> pavement and riprap with filter fabric, dewatering and the installation of new groundwater monitoring
<br /> wells. The earthwork included the removal and replacement of unsuitable soils, subgrade excavation,
<br /> and replacement for low-density soils, subgrade excavation to backfill, subgrade excavation to
<br /> stockpile and construction of the drainage soil layer. The liner system included the supply and
<br /> installation of the Geosynthetic Clay Liner, secondary Geomembrane, secondary Geocomposite,
<br /> Primary Geomembrane, Primary Geocomposite, Rain Tarp and the construction of the anchor trench.
<br /> The leachate collection system included the construction of the leachate collection and leak detection
<br /> trenches, leachate pump stations including concrete slabs, bollards, piping, fittings, control panels,
<br /> and appurtenances, the construction of the leachate force main including excavating, backfilling, road
<br /> crossings, pipe testing and connecting to the existing leachate force main. The construction of paved
<br /> and unpaved site road including stabilized subgrade, lime rock base, and paved surface for the landfill
<br /> access road pump station access drives, and perimeter maintenance and berm road.
<br /> Republic Bridgeton Landfill South Quarry Temporary Cover Integrity System & North Quarry
<br /> GCCS Expansion: Construction of a temporary cover integrity system for the South Quarry including
<br /> perimeter toe drains, condensate sumps, bench regrade, horizontal collector pipe with stone, strip
<br /> drains, subgrade preparation, existing FML tie-in seam, phase tie-in seam, 678,245sf of Geotextile,
<br /> 739,577sf of FLM, 140,040sf of road Geocomposite, 24" thick stone placement, 8" lateral, 6" lateral,
<br /> and 4" risers. Also included is the Gas Collection Control System Expansion for the North Quarry
<br /> Landfill. The work consisted of erosion control, dust control, stripping of cap area, subgrade
<br /> preparation, perimeter toe drain piping, Geotextile and FML for perimeter toe collection pipe trench,
<br /> perimeter toe collector stone placement, perimeter toe drain condensate sumps, 3"x6" perimeter
<br /> forcemain, 2" perimeter airline, installation of containment pump station, horizontal collector pipe &
<br /> stone, strip drains, perimeter anchor trench, booted liner penetrations, cap Geotextile and FML
<br /> installation, road Geocomposite installation, 21" thick road base stone placement, 3" thick road top
<br /> stone placement, gas well completion, 6" lateral and tie-in to existing, 8" lateral and tie-in to existing,
<br /> 24" header and tie-in to existing, 4" riser, 3"x6" gas forcemain, 2" gas airline, 18" CMP road crossing,
<br /> 36" CMP road crossing, 18" culvert, 24" culvert, new smart ditch, perimeter channel regrade, grading,
<br /> energy dissipator installation, pond strip & excavation, pond FML liner and anchor, 6" welded pipe
<br /> deflectors and terrace grading.
<br /> J
<br /> Q MANCO
<br />
|