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Forward Landfill – SIR 9 www.scsengineers.com  The 2025 tonnage was calculated by taking the estimated 2025 disposal tonnage and subtracting 75% of the 2014 organic tonnage as detailed in Sections 4 and 6 of this report;  A closure date of 2043 was utilized based on the remaining volumetric capacity included in Section 6 of this report. Note that the LandGEM is limited to an 80-yr span; therefore, the first model ends at Year 2033. A second model run includes years 2034 through 2043 (anticipated site closure year calculated in Section 6 of this report), so the peak gas generation anticipated at the Landfill of the two model runs have been added to estimate the actual peak generation for the site. Based on the model outputs, the peak LFG generation, with a closure date of 2043, is expected to occur in 2043 with a generation rate of approximately 7,027 scfm. The historic and projected future disposal rates developed for the Landfill are shown in the model results included in Appendix C. Note that the closure year for the Site changed from 2036 to 2043 due to assumed reduction in waste disposal at the Landfill due to organics diversion upstream, resulting in increased site life. 10 OPERATION AND CLOSURE DESIGN 10.1 OPERATION PLANS The operation plan includes personnel requirements, minimum equipment, materials handling, health and safety, and record keeping procedures for the daily MSW disposal operations at the Site. Based on allowable daily tonnage included in the SWFP, staff members are required for daily operations, site maintenance, environmental controls, records, and emergency and health and safety. All personnel assigned to the operation of the Site will receive onsite training specific to their job function and site conditions at the Site. Additionally, all personnel will participate in the Health and Safety Program. The reduction of organic waste disposal could lower the daily tonnage received which could change the number of personnel required to operate and maintain the Landfill. 10.2 CLOSURE DESIGN Per the current JTD, the proposed final cover design will include the following:  Long-term minimization of surface water intrusion;  Accommodate settlement and subsidence; and  Isolate wastes from the ground surface and to reduce the potential for odors and gas emissions. The reduction of drainage velocities and minimization of erosion will be implemented from the medium vegetation growth. The final cover design for the Site conforms to the requirements for Class II municipal solid waste landfills in 27 CCR §21090, 27 CCR §21140, and 40 CFR §258.60. The reduction in organic waste disposal is not anticipated to have any impacts on the closure design but could impact the closure timing. 11 FINAL GRADING PLAN This section addresses the proposed final grading contours for the proposed closure of the Site. Per 27 CCR §21090b and §21142, the final grading will be designed, graded, and maintained to reduce health and safety impacts and control vectors, fire, odor, litter, and LFG migration, prevent ponding,