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• Completion of a comprehensive watershed survey to delineate the topography and <br />potential watershed yield associated with surface flows (snow melt) <br />[subcontracted to Black Creek Hydrology, LLC] <br />• Ongoing design and installation of additional Level 6 stormwater controls in order <br />to completely sever any remaining possible stormwater source pathways <br />[subcontracted to Black Creek Hydrology, LLC and S. Whinnery Construction]. <br />• Completion of two surface and underground sampling events to capture samples <br />associated with Deadman Gulch, the Golden Wonder Mine and flows associated <br />with the entire setting. <br />• Ongoing design for the completion of the Deadman Gulch channel to capture <br />passive water treatment aspects as well as atypical water years flows <br />[subcontracted to Black Creek Hydrology, LLC]. <br />Concurrent with the above, GGI and Richmont have been actively pursuing the <br />opportunity to install several piezometer wells into the Level 6 pad area in order to <br />capture water that occurs at rhyolite formation interfaces. The water at the waste rock toe <br />seeps exhibits a chemical character indicative of an acid-bearing formation such as the <br />rhyolite formation that occurs ubiquitously in Gold Hill (as compared to the more <br />neutral-pH characteristic co-alluvium at the surface). It is believed that the rhyolite <br />formation may be saturated as a result of the intense amount of snow pack (178 - 181 % <br />NRCS Snowtel) on the above ridgeline. The piezometer wells will be driven at various <br />angles off the Level 6 pad in order to tap into this formation and obtain samples directly <br />correlative to the formations water quality. <br />The construction, monitoring, maintenance and eventual reclamation of these piezometer <br />wells is the focus of this technical revision request. The specific details associated with <br />these wells are as follows: <br />• Three wells will be installed off of the Level 6 area within the currently permitted <br />setting. <br />• Each well is anticipated to reach an approximately total depth of 100 feet, where <br />they will tap into geologic formations of interest (Figure 1). <br />• Each well is dedicated to be used for water sampling only. <br />• A permit for well installation has been obtained from the Colorado Division of <br />Water Resources (Attachment A). As part of the permit requirements, a <br />comprehensive record of the well log will be recorded. In addition, the solids <br />obtained from the drilling may be retained for various analysis (ie. acid base <br />accounting) in order to determine the acid-bearing characteristics. <br />Wells to be installed using steel casing for first 80+ feet, then cased with <br />perforated PVC to allow for a `narrow zone' of water accumulation from distinct <br />geologic formations. <br />Page 2 of 4