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• II-W 1981-2000 average. These values are more consistent thaw the Hayden <br />Station data when evaluating the aDriag runoff observed this year at Seneca <br />II-W. <br />Ground Water <br />Water Levels. Water levels for all walla that era in the current monitoring <br />program era yreeented is Appendix C. Hydrographa of all historic 8nta for each <br />well are presented prior to the mater level reDorta (for ell date niece 1991) <br />for each respective well is the same appendix. Hy Dreaeatiag all historic data, <br />treads related to seasonal and annual variability era more clearly evident. <br />Water level meaeuremeata era takes with as electrical avatar level indicator, or <br />is the case of a Eew shallow alluvial walla, directly from a steel teDe. 81te <br />information, including samDliag frequencies, ie presented is Table 3, Summary of <br />Ground Water Moaitorlag Walls. Grovad water level monitoring frequencies are <br />listed is Appendix 14-3a of the Seaecn lI-W PAP. <br />• - Alluvium. The alluvial monitoring Wells WHAI.6-1, 6-2, 6-3, 6-4, and 7-2 are <br />located along Hubbereoa Gulch. All walls exhibit water level aessonal <br />variatioae typical for the alluvium, i.e., shallow after the aDriag recharge, <br />fleepeaiaq towards the fall. Water levels at Walla 6-1 to 6-3 are non higher <br />than they had bean initially is May through July, due to irrigation introduced <br />to that area is May 1989. Well WHAL10 is located aDDroximetaly one-half mile <br />downstream of the NPDEB 006 Doad oa a tributary to 8ubbareon Gulch. It also <br />exhibits seasonal variatioae typical of previously mentioned monitoring orelle. <br />Wall WDAL11, locatefl immediately above the 8PD88 005 Pond, ie normally dry. <br />Wall WSAL12 ie located next to the lower Saga Creek flume Bite (SW-32W-FG4). <br />wall WSAL13 ie located on the northern tributary to Sage Creek below the NPDES <br />009 Pond. Well WSAL14 is located oa the southeza tributary to Snge Creak below <br />the NPDES 015 Poad. Moat of these walla exhibit typical seasonal variatioae. <br />- Wedge Overburden. Most o£ the six Waflge overburden wells monitored exhibit <br />seasonal variatioae typical of the overburden aquifer (i.e., shallow in the <br />• spring or summer, deeDeaing is the fall). Wells WOV14, 16, and 17 all exhibited <br />as increase is water levels over the Deer several years, while Well WOV18 <br />3 <br />