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final cover is placed and then reinstalled. The landfill gas well head stations will be extended up through the final cover through synthetic boots and then reconnected. Closure Stages Staged closure of the FL will be conducted throughout the development of the landfill. Stage 1A was closed in 2006. The Stage IB area will be closed based on a number of factors, such as refuse inflow rates, site conditions, etc. Subsequent staged closure dates are subject to future refuse inflow rates. Subsequent Partial Final Closure Plans will be submitted two years prior to reaching final fill elevations for each stage based on the refuse inflow rates for the preceding closure stage. In addition, Construction Quality Assurance (CQA), including closure certification, will be completed for each closure stage to verify proper final closure construction. Stage IA The Stage IA area consisted of 30.2 acres. This area includes the lower final fill slopes on the northern and southern portions of the landfill from the edge of the base liner system up to an elevation of 150 feet above mean sea level (AMSL). A partial final closure plan reflecting the closure of the Stage IA area was submitted and approved by the regulatory agencies in 2005. Stage IA was closed in 2006 in response to actions requested by the Regional Water Quality Control Board, Central Valley Region. The closure volume estimates were based on waste fill up to an elevation 150 feet AMSL down to the master plan base grades. As part of this project, the area was cleared and grubbed, as necessary, and the closure improvements constructed (e.g., final cover, permanent drainage, landfill gas system modification, etc.). Stage IB Stage IB is a 60.0 -acre area as shown on Figure 1. This area includes the upper final fill slopes on the northern and southern portions of the landfill from the edge of the base liner system up to an elevation of 150 feet AMSL. The closure volume estimates are based on waste fill up to an elevation 150 feet AMSL down to the master plan base grades. As part of this project, the area will be cleared and grubbed, as necessary, and the closure improvements constructed (e.g., final cover, permanent drainage, landfill gas system modification, etc.). It is anticipated that Stage IB area will be closed based on refuse inflow rates experienced over time, site conditions, and capital expenditure timing. The entire Stage 1A and 113 area (shown as Stage 1) is shown on Figure 1. Stage II Stage II is a 5.6 -acre area as shown on Figure 2. This area includes the final fill slopes along the southern slopes of the northern portion of the landfill up to an elevation of 150 feet AMSL. The closure volume estimates are based on waste fill 3 SWT Engineering Forward Landfill - PCPCMP Amendment (Z:\PROIECTS\Al lied Waste\Forward\1N81013 5 yr Review Plan\1TD Amd 3 PCPCMP Amd 3 Dec 08\PCPCMP Amend 3 121808.doc; Amendment No. 3: 12/18/08)