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EWRODUCTION <br />Contour Consulting Engineering, LLC, (Contour) collected groundwater samples at the <br />GCC Rio Grande, Pueblo Cement Plant, on May 12, 2009. The samples were collected <br />to satisfy monitoring permit requirements, as stipulated by the Colorado Division of <br />Mining Reclamation and Safety (DRMS). Sampling, beginning in second half, 2008, has <br />gone from quarterly monitoring to semi-annual monitoring. <br />WORK PERFORMED <br />Contour collected groundwater samples from three shallow alluvial monitoring wells <br />(MW002, MW003, and MW004) in the vicinity of the St. Charles River. The alluvial <br />wells represent downgradient conditions with respect to the Cement Plant operations. <br />Recently installed well MWOOIA is completed in the Codell Sandstone. This well was <br />determined to be dry during the first quarter 2008. Approximately 4 feet of water was <br />measured in this well during the second quarter 2008. One full bailer of very clear water <br />was removed from the well, and then the well went dry. Similar conditions were <br />encountered during the second half, 2008 and during the current May 2009 event. It is <br />likely that the water produced in this well was a result of formation condensation. <br />Samples were not collected from well MWOOIA. <br />During the second quarter 2008, GCC installed an additional shallow groundwater <br />monitoring well (MWO05) at a location between the mine plant operations and the St. <br />Charles River (shown in Figure 1). The new well location was selected with input from <br />the (DRMS). Groundwater was not encountered in the shallow aquifer at the time the <br />well was installed, and no sample was collected. The well was sounded during the <br />second half, 2008 monitoring event, and was found to be dry, and no sample was <br />collects The well was also sounded during this May for the first half, 2009, report and <br />was also dry. <br />Depth-to-groundwater measurements were performed at each alluvial well prior to <br />sampling. Wells were also sounded to determine total depth. The volume of standing <br />water in each well was determined. Each of the alluvial wells were purged using a new <br />disposable poly bailer. A minimum of three casing volumes was purged from each well <br />prior to sampling. Field parameters pH, conductivity, and temperature were recorded as <br />each well volume was removed. Groundwater was purged until these parameters were <br />stabilized and reproducible (typically after three or four measurement sets). <br />All groundwater samples were submitted to Evergreen Analytical Laboratory, located in <br />Wheat Ridge Colorado, for analysis. Evergreen was recently acquired by Accu-Test <br />Laboratory, and a laboratory name change will be completed later in 2009. Evergreen <br />subcontracted analyses for radiochemical parameters to Hawn Research, Golden, Co.