KENAI PENINSULA BOROUGH SOLID WASTE DEPARTMENT CENTRAL P CENTRAL - PDF document

KENAI PENINSULA BOROUGH SOLID WASTE DEPARTMENT CENTRAL P CENTRAL PENINSULA NINSULA LANDFILL LANDFILL Cell Cell 1 1

CPL CELL 1 DEVELOPMENT Federal and State regulations require liner installation and extensive environmental controls with any new or expanded landfill. To address these requirements, improvements were constructed at the Central Peninsula Landfill - the Borough's main regional landfill. October 2002 The October 2002 election authorized the issuance of solid waste bonds in the amount of $12,000,000 to finance the construction and equipping of the Central Peninsula Landfill. $7,040,000 of the authorized amount was issued in May 2003 for the first phase. It is anticipated that the remaining amount of $4,960,000 will be issued in approximately 2009. 2002 - 2004 URS Corporation designed the landfill expansion and conducted inspection services during cell liner installation. Consultant Services - approximately $435,000. 2003 Cook Inlet Construction Company (CIC) cleared/grubbed 40 acres and excavated 625,573 cubic yards of silty/sand for Cell 1 development at a cost of $945,725. 2004-2005 Wolverine Construction Company constructed the Cell 1 liner installation, leachate collection and treatment system, mechanical / pump building, driving and parking pads, stormwater system, and other related improvements. The project cost approximately $3,390,000. Other contracts included fencing, monitor well installation, power extension, liner installation quality control inspections, access road construction, stormwater system and equipment, laboratory testing, other facility equipment. Initial placement of waste in Cell 1 began in 2005. Page 2

CPL CELL DEVELOPMENT FENCING 1.3 miles of chain link fence was installed to secure the new lined cell and the closed Landfill. Page 3

CPL CELL DEVELOPMENT New equipment purchased with bond monies. Left: 280,000 gallon leachate tank. Above: 750,000 gallon lagoon. A mechanical building houses the generator, pumps, blowers, flow meters and other mechanical functions. Page 4

CPL CELL DEVELOPMENT Northwest Linings, Kent, Washington installed the liner. The composite liner consists of a Geosynthetic Clay Liner base, overlain with a 60 mil High Density Polyethelyene Geomembrane, Geotextile, drain rock layer and then sand/silt to protect the liner from puncture (see Schematic to left). Each seam had to be tested for quality control and every piece had to be “mapped” and tracked as it was installed. Page 5

Waste Lift 1: Initial placement of 6’ to 9’ of trash in lift 1 is not compacted. The reason for this is to protect bottom liner and allow for enhanced recirculation of leachate. Waste Lift 2: 120 cubic foot walking floor trailer disposing at landfill working face. Page 6

Waste Lift 3: 120 Cubic foot walking floor trailer from a solid waste transfer facility disposing at the working face. Side slopes must be constructed to specific grades to promote drainage and maintain stability. Price: $00.00 Order #: 000000 Type: Type Settlement Plates: ADEC RD & D project permit requirement. Vertical movement of plates helps evaluate how leachate recirculation enhances waste degradation. Waste Lift 3 : Side slopes are above access road grade. 3:1 slope is maintained and covered in plastic. Plastic acts as a storm water collection mechanism and minimizes leachate generation from precipitation. Page 7

Stormwater System Stormwater diversion is critical to keep water out of the waste. Borough staff constructed the stormwater system by installing +450,000 square feet of polyethylene and +2000 sandbags, culverts, pumps and developed the access road. Left: CIC, Inc. begins excavation Page 8

The water passing through the waste will be collected as leachate and injected back through the waste mass. A gas flare system may be needed in the future. The closed landfill was capped in the summer of 2007. The lined 9.3 acres has an estimated capacity of 5 years. OTHER CONTRIBUTING CONTRACTORS Preferred Plumbing & Heating Alaska Test Lab Kachemak Electric Moore’s Landscaping Martin Mines/ Great Northern Polar Supply Construction McLane Consulting Heat and Frost Insulation, Inc. Seggesser Surveying Rockford Corporation/Columbia Tank Hughes Drilling Acme Fence 2 Bears Trucking Four Seasons Fence Rozak Excavating Northern Test Lab Spectrum Services Shannon and Wilson Page 9

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Why the project is needed: ADEC Solid Waste Regulations 18AAC 60.330 specify that Class 1 Landfills, those landfills accepting more than 20 tons per day, shall be constructed to specific design standards. Meaning, Federal and State regulations require liner installation and extensive environmental controls with any new landfill or any lateral expansion of an existing landfill. What will the $4,960,000 bond monies be used for? To finance planning, designing, site preparation, con- structing and equipping a regional solid waste facility. Projected Time Line The expansion of CPL was designed to provide the Bor- ough with approximately 20 years of additional waste fill capacity. The estimated waste associated with a 20- year capacity was developed based on historical waste generation rates. The purposed expansion alternative was subdivided into four 5-year cells. Each cell was laid out to enhance the disposal operation by planned cell sequencing and construction. We anticipate that filling Cell 2 will commence in 2011. Cell 2 should reach its design capacity in 2016. Financing for the development of Cell 3 & 4 will be needed in approximately 2013. Development of Cell 3 will commence in 2014, construction in 2015. Page 11

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