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operational statistics are calculated for all data prior to the reporting period. <br />Numeric protective levels (NPL) and early warning indicators (EWI} are shown for <br />each constituent at each well where these staUStical values apply. <br />Analysis of the data collected in the second quarter 2007 shows one data point <br />for dissolved sodium elevated above the early warning indicator at the alluvial <br />well 21-5 The sample, collected in June 2007 indicates a value for dissolved <br />sodium of 505 mg1L. The calculated EWI for this constituent at this monitoring <br />point is 498 mglL, a difference of 7 mglL. The baseline mean value for <br />dissolved sodium is 443 mg/L computed from 15 baseline samples. The <br />operational mean value determined from 60 total samples is 468 mglL. The <br />maximum value observed in the baseline program was 456 mg/L. No other <br />constituents flagged above the EWI at this well during the second quarter 2007 <br />monitoring period. Dissolved sodium has been elevated slightly above the EWI <br />five times during the period of record at this monitoring point. Observations of <br />dissolved sodium at well 21-5 will continue on a quarterly frequency. <br />Well 21-5 (Alluvial Completion) <br />Water Elevation and Dissolved Sodium <br /> 550 <br />525 <br />~,ny WarMm <br />r Inmcalur -nns n,na. ~U4U <br /> 6039 <br /> 500 _.. - c, - _' <br />~ <br />~ 6038 <br /> 475 <br /> <br />` t -~q <br />} <br />\~ <br />'~ ( <br />• , y <br /> <br />~ <br />v y}f <br />f <br />6037 <br /> 45U ~ . <br />M <br />_,s ~ <br />~~ia .,i~ ` <br />r~ ° a ,f <br />ree - Q c,~i`. <br />~ 4: 5 ' <br />~L <br />. <br />z ~ •~ g ~ ~ $ <br />{.~ <br /> 4ilU ~ <br />° ~ ° 6D35 <br /> <br />B 375 5034 <br />~ 37U <br /> <br />325 6033 <br />~ 6032 <br /> 300 <br /> 275 (1031 <br /> 250 ~ ~ ~ - - - 6030 <br /> ~~ .~~~ <br />era <br />:a , <br />~a~a <br />-n ~~~r a t <br />,• ~> <br />~, <br />- .nn-I~~ <br />a"n :~:~, <br /> , <br />,. <br />- <br />. -. <br />- ~ <br />_ <br />f ~. <br /> Dale <br />Uiasolvod Sodmm Farry Warning Ind¢ator <br />