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Quarterly Monitoring Report – Third Quarter 2025 <br />www.arcadis.com <br />Forward Landfill 3Q25 Quarterly Mon Report 11 <br />4.4.1 Waste Types and Quantities <br />The types and quantities of waste handled at the Site during third quarter 2025 are summarized in Table 4-2 <br />below. Documentation of waste types and quantities is included in Appendix E. The compost facility is discussed <br />in more detail in Section 4.4.3, and the surface impoundments are discussed in more detail in Section 4.1.3. <br />Table 4-2 Waste Types and Quantities <br />Waste Type Third Quarter 2025 Quantity <br />Friable asbestos waste (tons) 1,278.46 <br />Sewage and wastewater sludges (tons) 977.48 <br />Other non-hazardous waste material (tons) 94,311.52 <br />Total solid waste (tons) 96,567.46 <br />Disposal area (WMU) FU-24 <br />Yard waste material (tons) 20,906.33 <br />Compost generated (tons) 11,811.19 <br />Liquid discharge to surface impoundments, F-North <br />(gallons) 93,600 <br />Liquid discharge to surface impoundments, F-West <br />(gallons) 81,300¹ <br />Liquid discharge to surface impoundments, total <br />(gallons) 174,900 <br />Note: <br />1The flow meter at leachate sump FU-04E was observed as not operating correctly on August 23, 2025. A new flow meter was <br />installed at this location on September 17, 2025. <br />4.4.2 Standard Observations <br />Forward personnel conduct standard observations within, around the perimeter, and across the Site, in <br />accordance with MRP Tables 31 and 32 (RWQCB 2024). Standard observations include identifying evidence of <br />liquids entering or leaving the landfill and signs of ponding on the landfill or erosion of the landfill cover soils, as <br />well as identifying strong landfill gas odors. Completed Forward inspection forms are provided in Appendix E. <br />The Forward Landfill Operations Manager performs weekly monitoring for odors along the perimeter of the landfill <br />and on the landfill surface pursuant to the Forward Landfill Odor Control Management Plan (Forward 2009). If an <br />odor complaint is received from the public, Forward performs an immediate investigation to identify the source. <br />Mitigation measures are implemented following confirmation of an odor. No odors requiring mitigation measures <br />were reported in third quarter 2025.