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0 Lined Areas 1 and 3 are provided with: <br />C <br />• 3,000 gallon leachate storage tank at the southwest corner of Area 1 <br />• Discharge pump located at the storage tank <br />Lined Area 4 is provided with: <br />• 10,000 gallon leachate storage tank <br />• Transfer pump to fill water trucks, if needed <br />• Return pump to pump leachate back to the refuse, if needed <br />Leachate is pumped from the leachate storage tank to an infusion point, a horizontal LFG <br />collector, or to the working face. Leachate is only returned to an Area with a liner constructed in <br />accordance with Subtitle D, such as of Area 3 and 4 and future Areas. <br />Leachate disposal facilities will be expanded and adjusted as needed to comply with applicable <br />permit and regulatory requirements. <br />2.3.2.3 Engineering and Chemical Properties of Soil <br />The engineering and chemical properties of the soil at the NCRC&SL are: <br />• Soils at depths between 0 and 20 feet below the ground surface are predominantly clays <br />and sandy silts. <br />• The average plasticity index ranges from a low of 4 to a high of 34 with an average of 17. <br />• Maximum dry density ranges from 99.4 to 117.5 pounds per cubic foot. <br />• Remolded hydraulic conductivities (95% relative compaction, 2 to 4% wet of optimum) <br />ranged from 4x106 cm/sec to 1x108 cm/sec. <br />North County RC&SL Page 10 of 68 Public Works/Solid Waste <br />Joint Technical Document County of San Joaquin — October 10, 2014 <br />