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New Access Road Construction Work Plan <br />Exhibit D — Attachment 1 <br />Work Plan <br />Summary: <br />• Obtain access road design, construction, inspection and maintenance approval from <br />DRMS; and <br />• Obtain Stormwater Construction General Permit from Colorado Department of Public <br />Health and the Environment ( "CDPHE ") and approval from La Plata County. <br />Pre - Construction Activities <br />Preconstruction activities include conducting subsurface investigation, laboratory testing, <br />engineering analysis, conclusions regarding site stability, and design criteria recommendations. <br />Specifically, Wildcat will perform the following work: <br />• An engineering geologist will perform a detailed evaluation of the site including <br />reviewing existing geologic data and a detailed site reconnaissance to create a <br />geologic map of the site; <br />• Drill 6 test borings, 10 to 60 feet deep, and excavate 4 test pits, approximately 5 feet <br />deep, at the approximate location shown in Attachment 6.5 -3 Figure 5. The shallower <br />borings will extend to rock to supplement existing subsurface information regarding <br />the thickness and character of roadway fill; the deeper borings will extend at least 20 <br />feet into bedrock to assess the strength and character of these materials. The test pits <br />will be excavated on the outboard side of the roadway to assess the thickness of fill <br />and the character of the fill- natural soil /rock contact on the outboard side of the road. <br />Our engineer /geologist will log the borings and test pits, and obtain both relatively <br />undisturbed and bulk samples of the materials encountered. The relatively <br />undisturbed soil samples will be obtained via drive samples; rock samples will be <br />obtained by coring. Samples will be inspected to confirm field classifications and <br />select samples for laboratory testing. Selected samples will be transported for <br />laboratory testing; <br />• Perform laboratory testing on selected samples to assess moisture content and dry <br />density, strength, classification, grain -size distribution, compaction characteristics; <br />• Perform engineering and geologic evaluations to develop conclusions and <br />recommendations regarding the following: <br />• Stability of cut slopes in rock and colluvium areas; <br />• Criteria for the design of retaining walls on the outboard side of the <br />access road; and, <br />• Earthwork, including fill placement and compaction, suitability of <br />onsite materials for use as fill, and allowable cut and fill slopes; <br />• Prepare a technical memorandum summarizing the results of the work described <br />above; <br />Wildcat Mining Corporation <br />May Day Idaho Mine Complex — 112d Permit Application <br />Revised August, 2011 <br />Exhibit D — Attachment 1 <br />Page 5 of 15 <br />