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Design Report <br /> Daniels Sand Wash Fines Pit <br /> 9/21/2016 <br /> Page 1 of 5 <br /> 1 PURPOSE AND PROJECT DESCRIPTION <br /> The Daniels Sand existing wash fines pit is approximately 11 acres with a storage volume <br /> estimated at approximately 300 acre-feet. The existing impoundment pond was built <br /> approximately 10 years ago however has only been operational for the last 4 to 5 years. Transit <br /> Mix is planning on building a new wash fines pit with a 5 to 10 year capacity. This report <br /> presents the results of the field and laboratory investigations, embankment design and <br /> construction recommendations and specifications. <br /> 2 FIELD AND LABORATORY INVESTIGATIONS <br /> 2.1 Geotechnical Borings <br /> Brierley subcontracted Vine Laboratories from Denver, Colorado to drill four boreholes (BA-1 <br /> through BA-4). The borings were conducted to investigate general subsurface conditions and to <br /> obtain samples to aid in the determination of engineering properties. The borehole locations are <br /> shown on Figure 2. <br /> The auger borings were extended to depths ranging from 40 to 50 feet below the existing grade. <br /> Modified California Barrel (2-inch I.D., 2-1/2 inch O.D.)and Standard split-spoon barrel (1-3/8 <br /> inch I.D., 2-inch O.D.) samples were obtained in general accordance with Standard Penetration <br /> Test(SPT) procedures (ASTM D 1586). Samples were taken at intervals of 5 feet. The <br /> modified California barrel sampler is typically used to obtain intact cohesive soil samples that <br /> are well suited for laboratory tests. The penetration values reported in Section 3, Subsurface <br /> Conditions, are the number of blows of a 140-lb hammer falling 30 inches, counted in 6-inch <br /> intervals. The modified California barrel blow counts were not converted to standard <br /> penetration N-values. <br /> Descriptions and visual classifications of soil strata and samples were recorded on test boring <br /> reports during drilling. Soil descriptions follow the ASTM D 2487 or ASTM D 2488 Soil <br /> Classification System. Rock descriptions are in accordance with ASCE and ISRM descriptive <br /> systems for in-situ rock engineering properties. The completed test boring reports are provided <br /> in Appendix A along with an explanatory sheet defining the terms used on the reports. The <br /> subsurface conditions revealed by the field investigation are discussed in Section 3, Subsurface <br /> Conditions. <br /> 2.2 Laboratory Testing <br /> To aid in classifying the soils and to determine general soil characteristics, selected laboratory <br /> tests were performed on representative samples; test method references are shown in the <br /> following table. <br /> Table 2-1. Geotechnical Testing <br /> Parameter Method Reference <br /> - #200 Wash ASTM D 140 <br /> Atterberg Limits ASTM D 4318 <br /> Grain Size Distribution ASTM D 422 <br /> BRIERLEY <br /> ASSOCIATES <br /> Creating Space Underground <br />