B08_Attach_02_North_Rim_Final_CDs_Volume_00_20261012_Part1.pdf

This document is a construction design specification and sheet index for the Grand Canyon National Park North Rim Infrastructure Rehabilitation project, a World Heritage Site undertaking scheduled for May 2026. The project encompasses multiple utility infrastructure rehabilitation volumes including pipelines, water treatment, wastewater collection, and power distribution systems across the North Rim and inner canyon areas. The work is organized into 12 primary volumes plus a general volume: Volume 1 covers North Rim pipelines; Volume 2 addresses pipelines from North Rim to Roaring Springs Pumphouse (RSPH); Volume 3 covers North Rim to Supai Tunnel pipelines; Volume 4 addresses RSPH Cave to RSPH pipelines; Volume 5 covers the Roaring Springs Pumphouse facility; Volume 6 addresses North Rim Water Treatment Plant; Volume 8 covers North Rim Wastewater Collection System; Volumes 9-10 address power distribution North Rim and North Rim to RSPH; Volume 11 covers power distribution from RSPH to Manzanita; and Volume 12 addresses the Cottonwood Campground power system.

The construction documents package consists of 99+ sheets organized within Volume 0 (General) and includes detailed plans, elevations, sections, schedules, and specifications across all design disciplines. The design is prepared by HDR Engineering, Inc., located in Denver, Colorado, with a project management and design team including G. Young, R. Rhoades, and N. Lynch. Key work phases are identified with specific operational constraints, including phased construction to maintain existing water service operations, maximum 10-minute continuous shutdown duration for trans-canyon waterline work during Volume 1 operations, and restrictions on Roaring Springs Pumphouse electrical work completion timing to ensure functionality before November 15 and prior to the May opening date. The project areas and vicinity map identifies construction camps at the North Rim WWTP site, Lindberg Hill, Cottonwood Campground, and Norton Court Campground, with helicopter staging areas designated at the North Rim and South Rim locations.