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consumed in the areas where waste was placed during each operational year to determine compliance with the minimum compaction rate. Airspace consumed shall be determined by comparing the topographic survey from the previous year to the current year's topographic survey and determining a boundary of the area where waste was filled during the operational year. The airspace consumed shall be the fill volume within the boundary of where waste was placed for the operational year. The airspace consumed compaction rate must be verified through a standard survey, drone survey, or Global Positioning System (GPS) and all surveys or data will be provided to SWDD for their review. The density will be based on an annual survey in December of each year with final report due no later than January 15th of the following year. The Contractor shall use the tonnage report provided by SWDD and a topographic survey provided by the Contractor to calculate the waste density. If the Contractor fails to meet the minimum density of 1,400 lbs/cubic yard, an administrative charge will be assessed at the end of each fiscal year according to Article 10.2. All surveying and photogrammetric services must be performed in accordance with Florida Statutes Ch. 427, Chapter SJ -17, FAC- Professional Surveying and Mapping, and all other local, state, and federal standards as applicable to the survey being performed. 4. Utilize daily and intermediate cover as required by the Class I Landfill Permit or other regulation. The Contractor shall maximize the use of Alternative Daily Cover (ADC) to the extent allowed by the Class I Landfill Permit and approved by the SWDD. If the Contractor desires to utilize an ADC that is not approved in the current permit, the Contractor can petition to modify the permit and bear all costs associated with the permit modification. The County is responsible for providing both daily and intermediate cover at the County's expense. 5. The Contractor shall check elevations and slopes frequently to make sure the Fill Sequence Plans are adhered to. Over the term of the Agreement, Fill Sequence Plans will be developed and may be modified by SWDD. When the Contractor has completed filling an area, the Contractor and SWDD shall confirm that elevation points have been met within five calendar days. Interior elevations shall be within ±05. Final elevation grades on all areas, including benches and other features, shall be no greater than ±0.1', as confirmed by a licensed surveyor. Maintenance and management of all closed contiguous Class 1 landfill areas to include, but not limited to, landscaping, sodding, erosion control, stormwater control, repair of minor differential settlement areas to maintain positive drainage, etc. 6. Conducting site maintenance activities including mowing of the entire site, trimming, or weed eating around areas as required (fences, wells, ditches, boundaries, etc.), removing trees and stumps, grassing and fertilizing as needed, and maintaining landfill roads. A minimum clearance of 10 feet shall be maintained on both sides of the fence (as applicable). Internal landfill roads shall be maintained in a manner which is two -wheel drive operable and two lanes passable at all times. The Contractor shall control traffic in a way that ensures smooth, safe, and efficient traffic flow and will utilize permanent and temporary signage to direct traffic. All landfill roads must be swept with a magnet a minimum of weekly and swept with a sweeper truck as needed. The Contractor shall to the best of their ability prevent mud from Indian River County Landfill Operating Agreement Final Page 4 of 42