Laserfiche WebLink
• C1rII.RB -Exhibit G <br />Weser Information <br />Page 10 <br />'Three sets of baseline ground water quality data have been obtained from four monitoring wells <br />installed in the vicinity of the proposed mine project. 'Isle monitoring well locations are shown on <br />Figure G-2. Monitoring well DFMW-1 is located in an ephemeral stream channel near the rrorthem <br />property boundary upgradient of the proposed site. DFMW-1 will provide background data for the <br />shallow aquifer. Monitoring well DFMW-2 is locx0ed downgradient of the project area near the <br />southwest comer of the site between Highway 66 and the Palrrretorr Ditch. Monitoring wells DFMW- <br />3 and 4 are downgradient of the project area. DFMW-3 is located near the southeast corner of <br />Cramer Dairy north of the Rough and Ready Ditch. Monitoring well DFMW~ is located near the <br />southeast comer of the sine along the south bank of the Palmerton Ditch. Data from the sampling <br />events is summarized in Tables G-8 and G-9. <br />'The water quality analyses for each sampling event were relatively consistent and indicate background <br />oonditions..No elevated concentrations of contaminants have heel detected az concczrpations above the <br />• EPA practical quantilation limit (PQL). Data indicate that the shallow alluvial aquifer is predominately <br />bicarbonate. <br />Organic and metals analyses indicate no constituents az corwentrations that would be considered above <br />background. Major ions and other parameters are az corlcerrtrations that could be considered nomtal. <br />'The total suspended solids concentrations in two of the ground wale monitoring wells were lower in <br />the third quarter compared m the fast quarters. This can be attributed to the continued development <br />of the wells prior to sampling. <br />Major ion balance calculations were made to determine the completeness of the ground water analyses. <br />Results of the ion balance calculations are presented in the quarterly monitoring reports. Groundwater <br />samples are electrically neutral, so that total charges on cations and anions reported in the analyses <br />should be equal. The total positive acrd negative charges are obtaired by summing the equivalent <br />corlcentrazions of cations and anions. The ion balance error is norrrlally expressed by the difference <br />as a percentage of the sum and should be less than about 7.5 per cent error (L.lyod and Heathoote, <br />1985). Ion balance for the third quarter analyses az Dowe Flats are within the acceptable range. <br />pH, temperature and specific oonductartce also wen: pleasured doling each sampling event prior to <br />• sampling the water. Groundwater pH varies from 6.90 to 7.57. The specific conductarrce varies from <br />