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6000 <br />5600 <br />5200 <br />4800 <br />E 4400 <br />4000 <br />:2 6 3600 <br />N 3200 <br />2800 - <br />y 2400 - <br />2000 <br />- 1600 <br />0 1200 <br />800 <br />400 <br />0 <br />6) m0000000--- -��NNNNNNMMMMMM������ln Ln <br />O M 00 O 00 O 00 O O 00 O 00 O 00 O O 00 O 00 O 00 O O 00 O <br />rnM�nOMtnNMNC O��N00 COVMr��M00t�7�MNV6�N0)lf)ONC07 <br />nr�rn��MMf�M��Mu')I-M ; MLO M;: —M <br />Date <br />Well 28 -1 (Alluvial Completion) <br />Water Elevation and Total Dissolved Solids <br />Water Elevation 0 Total Dissolved Soilds <br />3 <br />6060�� <br />6059 <br />6058 <br />6057', <br />6056 <br />6055 <br />6054' <br />- 6053 <br />6052 <br />6051 <br />- 6050 <br />�(O tO r�I�000p WmOOr-e -NNM <br />WN(OM�rncD �Mf�CO�WN�� <br />M�MOMNMO) mM M I <br />_TDS Early Warning Indicator <br />The seasonal water level variation coordinates somewhat with fluctuations in the <br />concentration of total dissolved solids. The cation /anion balance calculated for the <br />June 3, 2013 sample from alluvial well 28 -1 is -0.7 %. The sum of the anions and <br />cations measured from this sample are 84.9 meq /L and 83.8 meq /L, respectively. <br />Conductivity (6320 umhos /cm) and total alkalinity (1170 mg /L) are both <br />representative of historical values and below EWI range. The values for all other <br />indicator parameters analyzed were below the EWI levels showing no marked <br />corresponding increase. Data validation and QA /QC samples indicate no <br />apparent laboratory or sampling issues. Monitoring of alluvial well 28 -1 will <br />continue on a quarterly frequency. <br />Down - Gradient Alluvial Well 21 -5 — Dissolved Sodium <br />Comparison of the data values with the Early Warning Indicators (EWI) and the <br />Numeric Protective Levels (NPL) indicates one data point for dissolved sodium <br />