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2021-12-22_PERMIT FILE - C1981019 (2)
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2021-12-22_PERMIT FILE - C1981019 (2)
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Last modified
5/17/2022 7:15:44 PM
Creation date
5/17/2022 6:30:13 PM
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Template:
DRMS Permit Index
Permit No
C1981019
IBM Index Class Name
Permit File
Doc Date
12/22/2021
Doc Name
Salinity Material Damage Assessment
Section_Exhibit Name
Exhibit 07 Item 16 Salinity Material Damage Assessment
Media Type
D
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<br />3 <br /> <br /> <br />3.0 SOILS EVALUATION <br />Salinity is measured by passing an electrical current through a soil solution extracted from a <br />saturated soil sample. Figure 1 displays the soil samples collected from 0-6 inch depth to evaluate <br />the existing salt content and other agronomic indicators. The 18 soil samples indicated EC ranging <br />from 0.3 to 3.7 dS/m. The two highest EC’s (3.7 and 3.6) were collected from the Proctor fields, <br />which also receives comingled irrigation water from Milk Creek (Milk Creek was not evaluated <br />under this study). However, EC values when averaged out for an entire field are well below the <br />threshold (2.0 dS/m) for soils to be considered saline. Overall, salt deposition from irrigation <br />water from Good Spring Creek is not occurring over the fields encompassing this study area. <br /> <br /> <br /> <br /> <br />Table 2 Colowyo - Salinity Study - 2021 <br />Soil Laboratory Results <br />Sample EC Ca Mg Na K SAR Sand Silt Clay <br />Field ID # dS/m <br />SS15 0.5 3.7 4.0 1.3 0.9 0.7 32 42 26 Loam <br />SS16 0.7 5.2 6.8 1.4 0.9 0.6 58 22 20 Sandy Loam <br />SS17 0.8 5.2 7.1 0.5 1.6 0.2 48 27 25 Sandy Clay Loam <br />SS18 0.6 1.7 5.5 4.8 0.5 2.6 24 35 41 Clay <br />SS19 2.0 5.2 23.3 12.2 1.9 3.2 22 35 43 Clay <br />0.9 4.2 9.3 4.0 1.2 1.5 37 32 31 <br />SS1 0.7 3.4 4.6 1.9 0.5 1.0 48 32 20 Loam <br />SS2 1.3 7.2 10.4 4.6 0.6 1.5 58 27 15 Sandy Loam <br />SS3 0.6 4.1 5.3 0.5 0.9 0.2 48 35 17 Loam <br />SS4 3.4 20 34.3 12.9 3.2 2.5 58 25 17 Sandy Loam <br />SS5 1.9 10.4 18.9 7.9 0.6 2.1 50 29 21 Loam <br />SS6 1.0 6.3 8.5 4.1 0.9 1.5 58 28 14 Sandy Loam <br />SS7 1.2 7.1 8.7 3.8 1.3 1.4 58 25 17 Sandy Loam <br />1.6 9.2 14.4 5.6 1.3 1.5 55 28 17 <br />SS8 0.3 2.5 1.7 0.1 1.6 0.1 74 18 8 Sandy Loam <br />SS9 0.8 5.5 6.3 0.7 2.0 0.3 56 25 19 Sandy Loam <br />SS11 3.6 15.5 39.6 15.2 - 2.89 26 48 26 Loam <br />SS12 0.4 2.2 2.2 0.6 0.7 0.4 42 35 23 Loam <br />SS13 3.7 19.9 42.9 12.4 0.2 2.2 48 19 33 Sandy Clay Loam <br />SS14 0.42 3.5 1.4 0.3 - 0.2 23 45 32 Clay Loam <br />1.5 8.2 15.7 4.9 1.1 1.0 45 32 24 <br />Cox Average <br />Proctor Average <br />Elkhorn & Proctor Average <br />--------------------------meq/L-----------------------Texture--------------------%------------------- <br />Elkhorn & <br />Streeter <br />Cox <br />Proctor
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