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Engineering Properties-Weld County, Colorado, Southern Part <br />Journey Ventures Pit <br />References: <br />American Association of State Highway and Transportation Officials (AASHTO). <br />2004. Standard specifications for transportation materials and methods of sampling <br />and testing. 24th edition. <br />American Society for Testing and Materials (ASTM). 2005. Standard classification <br />of soils for engineering purposes. ASTM Standard D2487-00. <br />USDA Natural Resources Web Soil Survey 2.0 10/252008 <br />Conservation Service National Cooperative Soil Survey Page 2 of 4 <br />76