2025 Kittitas County Agreement for Services Parametrix (2)

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Kittitas County Agreement for Services (rev. 5/14/25) Page 4 of 28 and market conditions. Prepare documentation for submittal to Ecology and Kittitas County Public Health Department consistent with March 1 review and April 1 submittal deadlines. •Fill Progression (LPL) - Use topographic survey data provided by the County to update fill progression maps, estimate remaining capacity, and refine closure and post-closure cost projections for the Financial Assurance update. •As-Needed Plan Amendments – If operational, design, or regulatory changes require formal plan modifications beyond the annual updates, prepare revised plan documents and coordinate submittals with Ecology and Kittitas County Public Health District under the applicable WAC section. Deliverables •Draft and final annual summary memo documenting any updates to the Plan of Operations, Closure Plan, and Post-Closure Plan (LPL). •Draft and final updated FA summary memo, including revised cost estimates, schedules, and financial model outputs (LPL and Balefill). •Formal plan revisions only if required due to substantive changes. •Updated drawings and volumetric analysis for LPL, incorporated into Closure Plan Review and Financial Assurance documentation. Assumptions •The County will perform annual topographic or aerial survey of the active LPL and the closed Balefill Landfill to document current grades and volumetric changes. •No significant changes to landfill operations, closure grades, or post-closure use are anticipated during the contract period. •Minor updates will be addressed through supplemental documentation to avoid triggering re-review by the regulators. •County will provide current account balances, waste volumes, and tipping fee data for FA updates. •Annual coordination and schedule alignment will occur during the County’s established regulatory review cycle to ensure deliverables meet March 1 review and April 1 submittal deadlines. •Survey will be completed by a qualified surveyor retained by the County or Parametrix; costs for survey services are included in the Task 1.0 budget. •Survey results will be provided in CAD and/or GIS format suitable for integration into closure planning figures and cost models. Task 02 – Environmental Monitoring Objective Conduct and report all required environmental monitoring for groundwater, leachate, and landfill gas (LFG) at the LPL and the closed Balefill Landfill, in accordance with WAC 173-350, WAC 173-351, the approved Environmental Monitoring Plan, Sampling and Analysis Plan (SAP), and the LFG Monitoring Plan. This task is