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6MN Reservoir Powerline (MR08-232) <br />A new powerline was extended approximately 1500 feet between existing electrical substation 12 (NW <br />Ventillation Fan) and the eastern edge of the proposed 6MN reservoir. Powerline construction involved the <br />minimal disturbance required to place 15 powerpoles and string conductors, with pole placement avoiding the <br />Foidel Creek buffer zone. The powerline construction project was necessary to supply power for pumps at the <br />6MN Reservoir. Exhibit 49R illustrates the power line/pole locations. <br />Substation 11 is a second primary distribution substation located on the 6MN Road, which converts incoming <br />power from 69KV to 12,470V and transfers the power through overhead distribution lines to three secondary <br />substations (Substations 2, 12, and 13). Substation 2, is located near the lORT Dewatering Well. Substations 12 <br />and 13 convert the incoming power from 12,470V to 4,160V and distribute it to the associated NW Mains <br />Ventilation Fan installation, and the 6MN Facilities, respectively. Substation 12 is approximately 30 x 20 feet, <br />and consists of a fenced transformer pad, transformer, associated electrical equipment, and connecting power <br />distribution lines. <br />Powerpole installation involved the use of existing roads or limited overland access to the individual pole <br />locations, localized shallow auger drilling to set each pole, pole placement and anchoring, and distribution of the <br />limited drill cuttings over the small area surrounding each pole. Given the very limited temporary disturbance <br />involved, TCC did not propose topsoil recovery or reseeding for the individual powerpole locations. It should <br />be noted that pole locations have been selected specifically to avoid stream buffer zones or other sensitive areas. <br />Constriction of the distribution lines will involve the use of existing roads or limited overland access by a bucket <br />truck and cable truck to install cross-bars, insulators and conductors. All cross-bars will have installed raptor <br />deterrents, consistent with approved raptor protection guidelines. Powerline installation will not affect existing <br />drainage systems, given the minimal surface disturbance and very temporary nature of the activities involved. <br />MR08-232 2.05-47.1 11/04/08 <br />