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Page 1-15 SECTION 1 -LANDFILL EXPANSION ISSUES Citation Regulation Design Element Title 14, 17779 (f) Slope Protection and Erosion Control: (f)Slopes Intermediate and final closure shall be stabilized to prevent soil erosion. slopes will be stabilized to ..excavated land on-site shall be included under minimize soil loss. this subsection. Methods..include..: (1) Reduction of water velocity by minimizing both the slope and/or the length of the final sur- face between drainage collection points. (2)Trapping of suspended solids by terracing contour furrows and trenches. Title 14, 17779 (g) Slope Protection and Erosion Control: (g) Erosion control measures will Process, materials, and/or structures which be implemented as applicable. protect slopes... and...assists germination.. include: (1) Application of mulch (2) Riprap, Geotextile nets or grids.. (3) Scarifying the surface. Title 14, 17779 (h) The operator shall perform a run-off analysis for Discussed in Section 1.5.7, sheet and rill erosion to predict the amount of soil Erosion Control. loss (tons/acre/year)... Title 23,2533(b) Where considerations of factors.. Class III landfill Composite liner with two foot shall be required to have a single clay liner with clay layer of 1 x 10''cm/sec permeability of 1 x 10 cm/sec or less. exceeds requirements. Title 23,2542 (b) For a Class III landfill, a clay liner,.. be a Composite liner with two foot minimum of 1 foot thick and installed at a relative clay layer of 1 x IV cm/sec compaction of at least 90 percent. exceeds requirement. Title 23,2581 (a) (1) Final Cover Requirements: Closed landfills shall Foundation under geomem- be provided with not less than two feet brans will include compacted of..foundation layer for the final cover...foundation intermediate cover and 18"of layer shall be compacted to the maximum density compacted soil with a maxi- obtainable at optimum moisture content.. mum permeability of 1 x 10'5 cm/sec. i Title 23,2581 (a) (2) Closed landfills shall be provided with not less Landfill will be closed with a than one foot of soil containing no waste or geomembrane cover system. leachate placed on top of the foundation layer and ( compacted to attain a permeability of either 1 x I10'6 cm/sec or less,or equal to the permeability of any bottom liner system... Title 23,2581 (a) (3) Closed landfills shall be provided with not less A minimum of one foot of than one foot of soil,containing no waste or material will be placed over the leachate, placed on top of the material ... rooting geomembrans. depth of any vegetation plated on the cover shall not exceed the depth to the material described in section (a) (2).. 1 City of Stockton R.W.Back and AsBodales 1811.0D2 e