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Wsdga Ondezburdea. Five walla, YWOlfi, 17, 7B, 79, and 30, monitor the Nadga uadarbuzdea. <br />None of these walla exhibit aqy significant eaaeoa¢1 variation, although soma veriatioa <br />from year-to-year is evident. <br />Wolf Creak Coal end Ondarbuzdaa. Oae roll monitors each of these tw unite, YWC31 sad <br />YWC931. Wall YWC31 axhibite vary little veriatioa. Nall YWCQ31 is mrmslly dry. <br />Ground Wstar Quality. Table 4 ahowe the ground rater parameter list used for all well <br />rater ea~lae. Apyeadix C proviQe^ all rater quality dsta collected during this reporting <br />period, along with se~linq remarks. Hater quality data for those rolls ao longer <br />required to ba sampled have also bean included hare. <br />Alluvium. Oaa roll, YAAL14, monitors water quality in the a~..•..~ Drar nl luvivm. Four <br />walls, YGAL15 to 1B, monitor rater quality is the Gzaeey Creak alluvium. Four rolls, <br />YSALl, 3, B, and 12, monitor rater quality is the Saga Creek alluvium. <br />Lennox Cosl sad Warburdaa. One roll moaitore each of theca tvo unite, YL6 nod YLOV3. <br />• Wadga Warburden. Four walls, YOV1, 9, ]8, sad 30, monitor rater quality in this wait. <br />Wndga Coel. Five rolls, YW1, 33, 2B, 29, and 30, monitor rater quality is [his unit. <br />Wndgs Oaderburdaa. Thraa ralle, YW02 B, 79, and 30, monitor rater quality in this unit. <br />Wolf Creek Coal. Oaa yell, YWC31, monitors water quality is this unit. <br />Comparieoa of Ground Wntaz Quality to Wntar Uea Btandarde. BCC has co~ilad lists of <br />etendardc for irzigst ion (Table 5I sad liveatoek (Table 6). Thasa liate era compo¢ad <br />mostly of Colorado Department of Health (CDOH) standards, although other agaaciee' <br />nteaderde have been ueafl if they era more stringent or if the CDOH has m etnadard for a <br />particular parameter. bee SCC'c Yoast Mine Permit Applicstioa, Teblae 7-71 and 7.73, Eor <br />n more datnilafl explanation of these steadarde. <br />Table 7 provided n comparison of ground water quality to irrigation ctsndarde. 6teadazfle <br />[hat were exceeded during this zeDOZtiaq Deriod era iron (3 wells), mengsaesa (8 walla), <br />• total dieeo lved solids (TD6, 3 walls), sad sulfates (19 relle). <br />3 <br />