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<br />TABLE 6-4 (Continued) <br />SELECT WATER QUALITY DATA FOR DOWN-GRADIENT WELLS <br />rn <br />rn <br />Na26-IRIS <br />A-Groove <br /> <br /> <br />Oct. 90 Nov. 90 Dec. 90 Jan. 91 Feb• 91 Mar, 1 A r. 1 Mav 91 June 1 uJ Iv 91 Aua. gl Se°t• 91 <br />Conductivi IFieldl 1,350 1,140 1,240 <br />(Lab) 1,120 1,410 <br />pH (Field) 10.1 10.5 10.0 <br />ILabl 9.8 9.5 <br />Temp. °C 7.0 12.6 11.8 <br />TDS Img/II 924 -- <br />SAR -- -- <br />Sodium Img/Il 271 418 <br />Fluoride fmg/li 20.0 13.5 <br />Boron Img/1) .27 .22 <br />Magnesium Img/II <1 <1 <br />Potassium (mg/II 4 3 <br />Na26-IRI-8 <br />Perched <br />Conductivit IFieldl 2,800 2,000 2,050 2,250 2,050 1,930 2,200 1,740 1,400 1,850 1,550 1,590 <br />{Lab) 1,510 1,520 4,080• 1,660 <br />H IFieldl 12.3 12.5 12.2 12.3 12.0 11.9 12.3 12.1 12.1 12.1 12.1 12.1 <br />ILabl 11.3 11.0 10.4 10.5 <br />Temp. °C 11.6 8.2 7.5 7.8 7.1 8.3 7,3 12.4 13.0 14.0 11.8 11.3 <br />TDS Img/II 1016 862 900 3,028' 910 <br />SAR 52 -- 37.8 -- 32.2 <br />Sodium Img/II 281 238 249 955• 314 <br />Fluoride (mg/II 1.1 1.4 1.7 22• 2.2 <br />Boron Img/I) .14 .10 .10 .11 .10 <br />Magnesium Img/II <1 <1 <1 <1 <1 <br />Potassium fm /II 29 16 27 16 15 <br />