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5. Materials and Quantities During the project, 12,470 cubic yards of ash and contaminated soil and 5,600 cubic yards of pyrolytic oil stained soil were encapsulated in the upper canyon. Approximately 9,900 cubic yards of clay was used to cap the contaminated material. Originally the CIWMB and Sukut estimated the amount of geotextile, erosion blanks, hydroseeding, and concrete work neces- sary to complete the project. As the project progressed and the pyrolytic oil was discovered, additional material was required. Table 12 summarizes the material and quantities before the storm damage. TABLE 12 Materials and Quantities Used at Panoche Material Unit Cost Quantity Geotextile (8-oz non-woven) $.70/SY 12,600 SY Erosion Control Blanks(BonTerra@ CS2 and CP2 mats) $.60/SY 25,500 SY Hydroseeding Per specified seed mix $1,200/acre 10 acres 2,000 Ib/acre fiber mulch 500 Ib/acre fertilizer 180 Ib/acre stab. Emulsion Concrete Structure per spec $36,650 Lump Sum Price Fencing Per Caltrans specifications $4.30/ft. 2,767 liner feet of fence Metal post and braces Five strand barbed wire One 16'wire mesh gate Two 10' gateways Dam and Spillway Protection (AnnorlocO 3510) $2.67/each 2,642 blocks Geomembrane(60 mil double textured HDPE) $1.13/SF 10,535 SF SY=square yards; SF=square feet With the significant rainfall in late December 1996 and the first week of January 1997, addi- tional work was necessary to protect site from further damage. The significant surface water runoff caused a series of erosion rills and damage to the drainage structures. To correct these problems, Sukut performed additional erosion control, hydroseeding, and cover work. Also, the damaged chevrons on the slope face were replaced with a 24-inch corrugated steel pipe and energy dissipater. Table 13 lists the materials used to repair the site. CIWMB 39