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However, water levels were collected from both wells for several decades. Both water levels and <br />water quality have been monitored at SLO42 from 1981 through 2014. All three of these wells <br />will be removed upon CDRMS approval of this application. <br />Three additional bedrock monitoring wells were installed within or proximate to the bond release <br />parcel during the early 1980's. Well SWC10 is a monitoring well completed in the Wolf Creek <br />coal at a depth of 86 feet. Water quality data at SWC10 was monitored in the early 1980's, and <br />water levels were collected from 1981 through 2010. Well SWU7 is a monitoring well completed <br />in the Wolf Creek overburden at depth of 140 feet. Water quality and levels in the Wolf Creek <br />overburden at this well was monitored from 1981 through 2010. Well SWU8P1 was also <br />completed in the Wolf Creek overburden at a depth of 300 feet. Water quality and levels were <br />also monitored at this well from 1981 through 2010. All three of these wells will be removed <br />upon CDRMS approval of this application. <br />Four bedrock wells were drilled by the USGS in 1987 upstream of Pond 004. They are: 1) Well <br />CL2 (30 feet deep, completed in the Lennox coal), 2) Well Cl2 (70 feet deep, completed in the <br />Lennox/Wadge interburden), 3) CW2 (90 feet deep, completed in the Wadge coal, and 4) Well <br />CU2 (122 feet deep, completed in the Wadge underburden). All wells are two inch diameter PVC, <br />and all four are normally flowing. All four wells are capped and pressurized with nitrogen gas to <br />prevent freezing in the winter. <br />Water quality and completion information for these fourUSGS wells may be found in the USGS <br />Open File Report 92-122; and USGS Water -Resources Investigation Reports 92-4067 and 92- <br />4187. These wells were apparently last sampled by the USGS in 1989. These wells were removed <br />using well abandonment procedures approved by the CDRMS in September 2015. <br />The drainage channels and stock ponds that will remain in the Phase III bond release area are <br />those that have been previously approved for permanent retention in TR -37 (2006) and PR -2 <br />(2010) for the Seneca II Mine and are shown on Map 2.05AM1 (2010) of the PSCM permit. <br />Exhibit 13-2A (updated in 2009) in the Seneca II Mine' permit, also illustrates the approved <br />permanent features. These permanent features are shown on Map 2 accompanying this <br />document. Pond 004 which is included in this Phase III bond release was approved as a <br />M <br />