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DRAFT [TENTATIVE] WASTE DISCHARGE REQUIREMENTS ORDER R5-2023-OOXX 57 <br /> FORWARD, INC. <br /> FORWARD LANDFILL <br /> SAN JOAQUIN COUNTY <br /> ATTACHMENT F—APPROVED FINAL CLOSURE DESIGN <br /> 1. Prescriptive Final Cover <br /> Component Top Deck and Side Slopes <br /> Erosion Resistant Layer Minimum 1-foot vegetative cover soil <br /> Low Hydraulic Conductivity Minimum 1-foot clean compacted clay soil <br /> (LHC) Layer (k :5 1 x 10-6 cm/sec) <br /> Foundation Layer Minimum 2-foot thick soil <br /> 2. Engineered Alternative 1 <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 /> 3. Engineered Alternative 2 <br /> Component Top Deck and Side Slope <br /> Cover Layer and 4-foot thick select soil material for upper monolithic cover <br /> Foundation Layer layer and foundation layer <br />