Landfills
In the 1960's the basis for today's modern sanitary landfills was developed as a
planned and engineered method for disposal of solid waste, was refined in the
1970's and beyond to the present day, to where a sanitary landfill is now
identified as a facility engineered, developed and operated to accept and
dispose of municipal solid waste in an environmentally sound manner that
minimize impacts to the public and environment.
Landfills are highly regulated facilities, are expensive, are long term, and an essential part of today's society, and are major developments either by public entities or private companies, and require expertise in design and operation of these facilities. Converse has the expertise to assist you with these waste management projects.
Our goal is to serve all your waste management needs in a cost-effective, efficient manner, and to arrive at solutions that are site-specific, and have an environmentally sustainable solution that meets the client's goals and regulatory requirements.
Project: Sussex County Landfill
Client:
Sussex County Municipal Utilities Authority
C/O Cerenzio & Panaro
418 Route 23 North
Franklin, NJ
Location: Lafayette, New Jersey
Converse performed a county wide landfill siting study for the Sussex County Municipal Utilities Authority (SCMUA). Ninety one sites were delineated for preliminary study. These sites were rated and ranked by the application of a set of geotechnical siting criteria. The top ten sites were advanced for more detailed study and investigation. The chosen site was subject to a detailed investigation to confirm the site's acceptability.
Converse prepared the construction plans and specifications for this modern lined landfill. Other engineering activities included the design of a leaf composting facility, installation and sampling of groundwater monitoring wells, preparation of operations and maintenance manuals for the transfer station and landfill, preparation of EHIS for bulky waste facility, solid waste composition studies, and surface water and soil chemistry monitoring. Converse also managed, and consequently certified, the construction of the landfill to the NJDEP. Quality control support services were also provided.
Project: ANDERSON LANDFILL LEACHATE POND
Location: Placerville, California
This project consisted of the construction of a 211,000 square foot leachate collection pond. The pond is characterized by descending 4:1 sloping side slopes at a maximum depth of 12 feet. The pond was constructed of a minimum of 12 inches of compacted clay liner. The pond was lined with a secondary and primary liner that consisted of the double-sided textured 60-mil HDPE that was placed and welded over a one-foot thick low permeable soil liner. A layer of geo-composite was placed tied, and sewn over the HDPE. Geo-synthetic clay liner was placed over the geo-composite and all seams were overlapped and bentonite amended. A primary single sided textured 60-mil HDPE liner was placed and welded over the geo-synthetic liner. A one-foot layer of protective 3/8 drainage pea gravel was placed over the primary liner.
Project: BADLANDS SANITARY LANDFILL EXPANSION
Location: Riverside, CA
Converse has provided services on various phases of Badlands Sanitary Landfill for Riverside County Waste Management.
One project consisted of performing field operations and engineering design studies for the 1,100-acre expansion of the existing landfill. This included drilling 19 monitoring wells, packer and bail-down permeability testing, down-hole geophysical logging, and groundwater map development. Converse also performed continuous stratigraphic coring and interpretation and geologic mapping, and review of aerial photographs. Seismic refraction surveys were performed to evaluate rippability during construction. Seismic calculations were also performed to develop ground movement parameters. Converse evaluated faults in the area of the landfill, mapped and researched clay resources, and performed laboratory testing of soil and clay for engineering parameters and permeability. Converse designed groundwater monitoring systems and prepared CADD base maps. A layout design for seven new canyon landfills was prepared, including designs for a leachate collection system, slope stability designs, as well as surface water drainage designs, were an important part of Converse's services. We also provided a gas generation modeling, and gas collection system design. Cost estimates for construction, operation, closure, post-closure, and maintenance were provided.
Another phase of the work included services provided during an approximate 35-acre landfill expansion. Converse completed the final design, plans and specifications for the landfill expansion, including grading plans, liner section, and a leachate collection system. Also included was a clay liner borrow study that included the construction of three liner test pads. Included in the contract specifications was a Quality Assurance/Quality Control (QA/QC) program that was developed by Converse.
The Badlands Sanitary Landfill is characterized by steep sided ridges and canyons, as much as 400 feet deep. Site material is soft, highly fractured rock. The San Andreas Fault also exists on-site. The estimated capacity of the landfill is 20,000,000 cubic yards
Project: SOUTH CANYON CONTAINMENT CELL-ANDERSON LANDFILL
Location: Placerville, California
Project Description and Scope of Service:
Converse provided the CQA for the construction of a 7-acre waste containment cell. The waste containment cell was constructed entirely within the original footprint of WMU-1. Side slopes are approximately 2:1 and flatter. The project began with the removal and relocation of approximately 130,000 cubic yards of waste from the footprint of the new waste containment cell. The removal was performed to establish a firm base on which to construct the south canyon berm.
