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NPS Form 10-900a (Rev. 8-86) utah Word Processor Format (02741) Approved 10/87 OMB No. 1024-0018 Uni ted states' Department of the Interior National Park Service NATIONAL REGISTER OF HISTORIC PLACES CONTINUATION SHEET section number 10 Page 2 Stairs station Hydroelectric Power Plant Historic District, Salt Lake City, Salt Lake County, Utah Verbal Boundary Description: The Stairs Station Hydt-oelectric Plant Historic District is located in the SW corner of section 20, T3S, R2E, on the USGS topo map labelled Draper, Utah. The Dam component is located on eastern edge of section 20, T3S, R2E, on the USGS Quadrangle labelled Hount Aire, Utah. The boundaries for the district begin at a point 40 ft. directly NW of the NW corner of the powerhouse which lies at the south edge of State Highway 152. The boundary then follows the south s ide of the highway 2 28 ft. to 10 ft. N of the penstoc k at the south edge of the highwa y . The boundary e x tends 10 ft. N of the penstoc k and conduit the tota l le ng th o f the conduit--2650 ft.--to wi thin 300 ft. o f Storm Mounta in Dam. The bound ary th e n procee ds directly N fo r 263 ft . along the FERC projec t boundary line where it then mak es a right angl e and travels due E for 5 25 ft., then mal,es another 90 d egree angle and proceeds due S for 375 ft., then makes another ri ght angle and proceed s due W for 525 ft. At this poin t , the beundary follews 10 ft. S of the conduit and pe nstock for 26 50 ft. towards the powerhouse. Within 67 ft. E of t he pewerho us e, the boundary makes a 90 degree angle, proceeds S E for 57 ft., then makes a 90 degr e e angle and pro ce ed s SW 11 0 ft. At t his p o int, t he boun dary makes another 90 degree angle and proc eeds 143 ft. to Point of Beginn ing. Total acreage is 6.37 acres. Boundary Justification: The boundary for Stairs Station Historic District encompasses a ll of the structures directly associated with the operation of the facility. The boundary encompasses the cleared, engineered ground upon which the powerhouse is situated and which Utah Power and Light uses to operate and maintain the plant. Th e boun da ry als o encompasses the narrow corridor of ground upon which the penstock and conduit are located. A short portion of the pensto ck crosses under the highway adjacent to the powerhouse. Ev en though the penstock is hidden at this point , the rest of th e stru cture is visible. It was dec i ded that the short underground portion of the penstock did warrant exc luding t h e penstock from the di str ict or creating a discontigu ous district. Th us the boundary follows the penstock as it runs under the highway and into the plant .