Laserfiche WebLink
4 . Soil sampling - 1980 <br /> A total of 31 samples were taken throughout the <br /> permit area in the disturbed portions , air-dried and subjected <br /> to chemical and physical analyses . The samples averaged <br /> from 0" to 14" in depth . Since the areas are disturbed and <br /> the "A" and "B" horizons are well mixed , no attempt was made <br /> to separate the horizons for analyses . Table III-G-1 presents <br /> the chemical data and Table III-G-2 presents physical <br /> characteristics of the samples . The numbers corresponding <br /> to the samples are represented on the soil survey map . <br /> 5 . Soil sampling - 1979 <br /> Fourteen soil samples were taken on September 18 , <br /> 1979 in the tunnel portal area for examination and analysis . <br /> • (See Table III-G-3 Tunnel Area Test Sites) . At each point , <br /> about 6 core samples were taken to the depth of the restrict- <br /> ing boulder layer and combined to form a representative <br /> sample . Depths ranged from 2" to 24" . The samples were <br /> air-dried and subjected to chemical analysis . The Mancos <br /> shale samples were coarsely ground before they were analysed . <br /> The chemical characteristics and percent organic matter <br /> found in the samples are indicated in Tables III-G-4 and <br /> III-G-5 . <br /> 6 . Test results <br /> pH: Results of the soils tests indicate the pH of <br /> the samples of the permit area (1980) are mainly in the 7 . 40 <br /> to 8 . 01 range . Four of the samples showed a pH in the range <br /> • of 6 . 09 to 5 . 90 . These ranges are quite satisfactory . <br /> -6- <br /> i <br />