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Finally, Spoil Spring 4 will be added to Table 1. This spring exists just above Pond 006. <br />40 In the Ground Water section of Table 1, monitoring at the four GW -S2W4 series wells (two Wadge <br />overburden wells, one Wadge coal well and one Wolf Creek coal well) will be discontinued. These <br />were abandoned in 2003 because of failures caused by their proximity to a highwall and also by <br />safety concerns. Monitoring at the five W -24 series wells will also be discontinued. They failed in a <br />landslide that occurred in the spring of 2003. Abandonment of the W -24 series wells was performed <br />in 2007. Replacement wells for the 4 and 24 series wells were drilled and completed in 2004. They <br />consist of a Wadge overburden well (WOV25), a Wadge coal well (WW25), a Sage Creek overburden <br />well (WSOV25), a Sage Creek coal well (WSC25), a Wolf Creek overburden well (WWCOV25), a Wolf <br />Creek coal well (WWC25), and a Wolf Creek underburden well (WWCU25). <br />Table 2, Surface Water Parameter List, has been revised. Monitoring for acidity, aluminum, barium, <br />fluoride, phosphate and molybdenum has been discontinued. These parameters are not listed in the <br />stream standards set forth by the CDPHE in Regulation 33, Classification and Numeric Standards for <br />Upper Colorado River Basin (Yampa River Segments 13d and 13e). There are also no agricultural <br />standards for these parameters in Regulation 31, Basic Standards for Surface Water. The "Analysis <br />Technique" for cadmium, chromium, copper, lead, manganese, nickel, selenium, silver and zinc has <br />been changed from "total recoverable" to "potentially dissolved ". This is the technique now mandated <br />by the CDPHE in Regulations 31 and 33. Finally, for similar reasons, the form of iron analyzed will be <br />"total recoverable ". <br />Table 3, Ground Water Parameter List, has also been revised. Monitoring for barium, molybdenum, <br />phosphate, ammonia and silver will be discontinued. These parameters are not listed in the ground <br />water agricultural standards set forth by the CDPHE in Regulation 41, Basic Standards for Ground <br />Water. <br />Technical Revision 58 (2007) Monitoring Program Changes <br />See page 15 -3a -13 <br />TR -63 15 -3a -3 Revised 1/09 <br />