BOULDER CITY - City of Boulder City Utilities Crews need to change the source of the electrical feed for Substation 6. As a result, there is a scheduled interruption for the Substation 6 service area for Thursday, July 30 at 3:00 a.m. The outage is expected to last approximately one hour. Power will be turned off to homes in the areas of Lake Mountain; Ville; Temple Rock; Marina; Quartzite; Tuscany; Claremont Estates; Keys; Black Canyon; Pinehurst; and Woodacre. Those with alarm systems, please notify your service provider. See memo and map of impacted areas below.