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DRAFT [TENTATIVE] WASTE DISCHARGE REQUIREMENTS ORDER R5-2023-00XX 63 <br />FORWARD, INC. <br />FORWARD LANDFILL <br />SAN JOAQUIN COUNTY <br />ATTACHMENT F—APPROVED FINAL CLOSURE DESIGN <br />1.Prescriptive Final Cover <br /> <br />2.Engineered Alternative 1 <br />3.Engineered Alternative 2 <br /> <br /> <br />Component Top Deck and Side Slopes <br />Erosion Resistant Layer Minimum 1-foot vegetative cover soil <br />Low Hydraulic Conductivity <br />(LHC) Layer <br />Minimum 1-foot clean compacted clay soil <br />(k ≤ 1 x 10-6 cm/sec) <br />Foundation Layer Minimum 2-foot thick soil <br />Component Top Deck and Side Slope <br />Cover Layer 3-foot thick select soil material for upper monolithic cover <br />layer <br />Foundation Layer 1-foot thick select soil materials placed as interim cover <br />Component Top Deck and Side Slope <br />Cover Layer and <br />Foundation Layer <br />4-foot thick select soil material for upper monolithic cover <br />layer and foundation layer