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<br />of the embanlmtent will be constructed to minimum construction <br />,.--, ~ standards and specifications of Montrose County, Colorndo, for County <br />' v acceptance approximately 7-I S years after completion. <br />3. RECOMMENDED GEDTECRNICAL SPECIFICATIONS <br />General geotechetical specifications and related notes are summarized <br />on the attached Figure 1. <br />8J FOUNDATION ACCEPTANCE CRITERIA <br />At the time of this report, 007 pond had been excavated to total depth <br />exposing sandstone bedrock along the entire length of the embanl~ent <br />foundation. Since excavation of the pond, 1 to 2 feet of sediment has <br />settled into the pond bottom in the area of the embankment. <br />Z ~ <br />.J To reduce the potential for excessive settlements of the rocldill <br />• ~ embanlmtent, we recommend the shucttue be founded duectly on the <br />sandstone bedrock at the bottom of the pond. Phis will require that the <br />recently deposited sediment be removed and bedrock exposed within <br />the footprint area of the rockfill embankment. We recotmend that a <br />representative of our faro be present dining this operation to confirm <br />the presence and type of bedrock exposed in the foundation and to <br />make any adjustments to the geotechnical specifications if necessary. <br />3.2 ROCRFILL MATERIAL <br />"Rockfill" is defined as containing less than SO% (by weight) smaller <br />than I-inch diameter particles and a maximum rock particle size being <br />75%of lift thickness (14 inches for 18-inch lifts, 28 inches for 24-inch <br />lifts), necessary [o provide a relatively smooth surface for compaction. <br />The rockf~ll must also contain less than 15% (by weight) fines passing <br />t <br />~~-J Attachment 2.05.3(3)9- 4 <br />Attachment 2.05.3(3)9- 4 <br />