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North County RC&SL Page 39 of 67 Public Works/Solid Waste <br />Joint Technical Document County of San Joaquin – Revised February 11, 2026 <br />• Records of waste derived ADC will be maintained on-site and be available for inspection. <br />Records will include quantities of ADC utilized, and usage will be recorded by area <br />covered and type of ADC. <br /> <br />Specific Information: <br />Tarps: When used as ADC, tarps will be placed over the exposed waste following waste <br />compaction. Tarps used as ADC will be removed from waste and exposed waste will be covered <br />with soil cover, ADC, or new waste within 24 hours. <br /> <br />Processed Green Materials: Green material used as ADC will be processed off site, prior to <br />delivery to meet the grain size specification by volume of 95 percent less than 6 inches. <br />Alternative processing and grain sizes may be utilized if approved by the LEA. Green material will <br />be restricted to a minimum compacted thickness of 6 inches and average compacted thickness of <br />no greater than 12 inches. Green material used as cover will not be exposed more than 21 days. <br /> <br />Compost Materials: If compost that does not meet the requirements of CCR Title 14, Division 7, <br />Chapter 3.1, Article 7 is employed as cover, the public will be restricted from areas of cover <br />staging, processing, tipping and placement. Compost materials will be restricted to a minimum <br />compacted thickness of 6 inches and average compacted thickness of no greater than 12 inches. <br />Compost materials will comply with a grain size specification by volume of 95 percent less than 6 <br />inches. As required by PRC Section 42245, compost materials used as cover material will be <br />limited to a maximum of 25% of total landfill cover materials or extenders. The County has not yet <br />determined where compost will be sourced from. When sources are determined, the LEA will be <br />notified. <br /> <br />Processed C&D Wastes and Materials: C&D wastes and materials will be processed off site and <br />will be placed alone or with soil. C&D wastes and materials will comply with a grain size <br />specification by volume of 95 percent less than 12 inches and 50 percent less than 6 inches, <br />unless otherwise approved by the LEA. They will be restricted to a minimum compacted thickness <br />of 6 inches and average compacted thickness of less than 18 inches. Processed C&D wastes <br />and materials will be restricted to the following: rock, concrete, brick, sand, soil, ceramics, cured <br />asphalt, lumber and wood, wood products, roofing material, plastic pipe, plant material from <br />construction work, and fines derived from processing the aforementioned materials. <br />