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i Mr. Dustin Czapla Page 3 of borehole would be plugged and abandoned, and P-14 would be installed at the alternate location approximately 15 to 20 ft to the west. The new recirculation/monitoring wells will be constructed in accordance with Colorado Office of the State Engineer guidelines. Wells will be completed to anticipated depths between 40 and 320 ft below ground surface and will be constructed with 5 -inch schedule 40 PVC casing and screen. The screen will have a slot size of 0.020 inches and screen a lengths will range from 20 to 50 feet. A silica 20140 sand will be used as a screen filter pack. Well casing will be grouted in place using a hydrated bentonite seal above the screen and a cement and bentonite mixture grout to surface. The surface stick-up well n completion will consist of a 7- to 10 -inch steel vault and locking lid. The inner PVC casing i� will be sealed with a locking cap. The well vault will be surrounded by an approximate 4 - foot diameter concrete apron sloped to facilitate proper drainage. Equipment used for the well installation includes drilling equipment and support vehicles. Drill cuttings will be handled as described below. Surface Disturbance Drilling and Monitoring Well Completion a A total of approximately 0.4 acres of previously -disturbed or reclaimed ground will be used during drilling and completion of recirculation/monitoring wells in and near the underground mine workings (Figure 3), which includes placement of drill cuttings in the a Tie Camp disposal cell (Figure 5). Similarly, approximately 0.1 acres of previously - disturbed or reclaimed ground will be used during drilling and completion of recirculation/monitoring wells in the Indian Rock Dump (Figure 4). The disturbed areas will be reclaimed once the wells are no longer being used as part of reagent injections and long-term monitoring associated with uranium load reduction system implementation, as described below. G D I I" 0 III I I Drill cuttings obtained from drilling in the underground mine workings and Indian Rock Dump will be screened using a hand-held Geiger -Mueller (GM) meter and segregated at the surface. Material that exhibits elevated counts per minute (cpm) relative to background will be isolated for disposal in the low-grade ore disposal cell adjacent to Tie Camp drainage in accordance with the terms of the Radioactive Materials License (Figure 5). Drill cuttings that do not exhibit elevated cpm readings relative to background will be spread and incorporated into the surface at the drilling locations. Reagent Iniection/Recirculation Infrastructure To facilitate larger scale water recirculation and phosphate injection activities, injection platforms and conveyance piping will be installed adjacent to recirculation wells in the underground mine workings and Indian Rock Dump well areas. Surface disturbances and reclamation associated with this infrastructure are as follows: • Two injection platforms will be constructed; one immediately east of wells P-4 and P-11 associated with underground mine workings injections (Figure 3) and a Homestake Mining Company 4% PO Box 40, Sargents, Colorado 81248