Laserfiche WebLink
eeperste section, Compsrison o! Ground Water puality to Water Usa Standards, rill discuss <br />any semplee that extend rater use standards. • <br />Data !ox each roll is this appandiz beings with a listing of the rater quality data <br />collected during this year, followed by remarks explaining the sampling procedure. This <br />is lollored by a plot of TDS versus tier Lox the entire period of rewM. The regreaeion <br />line on this plot ie generated by a method known as LOWE38 (LOCally WEighted Scattarplot <br />Smoothing). A smoothness factor of 1.0 (on a scale of 0 to 1) ran used, which results in <br />maximum "smoothing". Finally, this plot is followed by a table liatinq historic TD9 <br />values and percent milliequivalants for maj oz ions. <br />Alluvium. Wall 37 ie located furthest upstream on Little Grnssy Creak. Aeviaw o! the TDS <br />plot indicates an increasing trend. This ie due to the contribution of raters from Spoil <br />Springs 3, 4, and 5. Further downstream, Wall 6 also displays an increasing TDS trend for <br />similar reasons. Furthest domatraan on Little Graeay Creek and below NFDE9 002, is Wall <br />31A. It also diaplaya an increasing TDS trend. <br />Throe re 116 era sampled in the Grae ey Creek alluvium. Well 71 moni tore the alluvium <br />upstream of mining at Sancta II. It displays a slightly increasing TOS trend. Well 33 <br />monitors the Crasay Creek alluvium at the Little Graeey Creek eoafluanca. IL displays an <br />increasing TDS trend. Well 70 monitors the alluvium bolor Seneca II and also do~metream <br />of the confluence with 3cotchmans Gulch. It interestingly displays a slightly dacraaeinq <br />TDS trend. <br />In the Cor Camp Creak alluvium (below NFDES 004), rater quality ie measured at two walls. <br />Well d6 displayed an increasing TOS trend until 1986/1957, than a dacraue until 1991, and <br />finally an increase ainca 1991. Tha reason !or this TOS ^dip" is unkno~m. Wall 69, <br />located below 46, interestingly displays a decreasing TDS plot. <br />Wall 68, completed in the Bond Creak alluvium (bplor WFDES 008), roe drilled along with <br />Well 69 (sae above) in 1958. It likewise displays a decreasing TDS plot recently. <br />Wedge Owrburdan. Tro calls are used to monitor the rater quality of this etsatum. wall <br />21 is situated outside the permit bovadary and is downdip o! pre-SLiCBA mining and an <br />inactive fly ash pit praviovaly operated by the Hayden Station power plant. Nonitorinq at • <br />this roll roe Qieeontinued this spring (sae "Introduction"). TDS values here appear to <br />6 <br />