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The early SAR values from well GE1 were close to 20, while the <br />more recent values have ranged from 4.8 to 14. This change in SAR <br />values could be caused by an increased rate of movement of ground <br />water in this area due to the early drawdowns and recent recovering <br />water levels, These SAR values with the TDS of this water should <br />not make irrigation prohibitive for most soils. SAR values from <br />well GE2 have varied from 3.6 to 152. Although the 1989 SAR of 152 <br />was noticeably higher, the 1991 value of 22 was about average. A <br />large variation of values from well GE3 has also been observed with <br />the most recent value at 14.1, <br />SAR has generally been below one for well GF1 and above 30 at <br />wells GF2 and GF3. These values are thought to be representative <br />of natural conditions in the aquifer. The SAR values for GF2 and <br />GF3 could create a problem for irrigation on tight soils. Water <br />from well GF4 and GF5 also contains high SAR values. The SAR value <br />for water from well GF6 has varied from 0.34 to 6.2. Backfill well <br />GF7 has exhibited SAR values between 7 and 23. Limited data from <br />backfill well GF11 indicates a low value at less than one. <br />SAR values for wells GP1 and GP2 are approximately 11 and 5 on <br />the average. SAR values for well GP3 are less than 2, while values <br />from well GP4 have shown a very wide range from 32 to 177. <br />Well GP5 has had SAR values from 22 to 74. SAR values for <br />well GP6 have been below 4 for the last three years. The SAR <br />values from well GP7 are below 1, while the values from well GPS <br />have varied from 7.5 to 29. The average SAR from well GP9 is <br />approximately three. <br />3-11 <br />