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PERMFILE117028
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Last modified
8/24/2016 10:12:47 PM
Creation date
11/25/2007 3:07:28 AM
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Template:
DRMS Permit Index
Permit No
C1982056
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Section_Exhibit Name
EXHIBIT 38 ESTIMATION OF SALT LOAD FROM SPOIL MATERIAL BASED ON DRILL SAMPLES
Media Type
D
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No
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1 saturation extract with the intent of using saturation extract as the <br />2 standard. A good standard should provide enough water to allow <br />3 solution of all the readily soluble salts and have a pre-determined <br />4 amount of water. Concern over the effects of various ions on the• <br />5 solubility of others has discouraged the use of dilution ratios such as <br />6 1:1 or 1:5 although these are reported in the USDA Handbook No. 603. <br />7 When only the total dissolved solids are of concern these effects are <br />B less critical. <br />y Batch extraction data for successive ratios of material to eater <br />10 for both Williams Fork and Clenrock shored that the ratio of 1:2 <br />11 extracted essentially all of the readily soluble material. This can be <br />12 seen in Fig. 5. The individual ionic concentrations can be determined <br />13 from analysis of the extract as needed. If total dissolved solids are • <br />14 desir{ed this value has to be related to the electrical conductivity <br />15 for each material separately because of the different range of <br />16 concentrations of the various salts found in the materials. <br />17 The eater content for saturation extract is marked on the curves <br />18 of Fig. 5 to ahoy what the general level of total salt extraction would <br />19 be ae compared to the extraction by the other ratios of material to <br />20 eater.. It can be seen that if the total eztractable salts were to be <br />21 estimated from an eztrapolation from the saturation extract the result <br />22 could be very misleading. For material with a large amount of gypsum <br />present neither the batch nor leach technique can remove it all using a <br />gq reasonable amount of eater. <br />25 Any leaching or eztract data moat be adjusted for the level of <br />g8 solubility of the base material. Shis adjustment is not difficult when • <br />gq using leach curves because the base level is apparent, but for the <br />10 <br />
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