B08_Attach_02_North_Rim_Final_CDs_Volume_05_20261012_Part8.pdf

This is an engineering drawing document for a wastewater drainage infrastructure project at the North Rim of Grand Canyon National Park. The drawing was prepared by HDR Engineering, Inc., a prime contractor based in Denver, Colorado, under project manager J. Glover Gough/Glover (drawing number 17 of 113).

The document presents a plan and profile view (Sheet E) of a drain field system, including a site map with aerial imagery, a waterline fitting table identifying three connection points with specific northing and easting coordinates, and a detailed cross-sectional profile of the drain field infrastructure. The profile illustrates the drainage system components, including an RSPH crib wall, drainfield extents, emergency overflow provisions, a perforated PVC drain, and gravel or broken stone base material (3/4 inch to 2 inch). The waterline fitting table specifies three connection points: Point 24 connecting to floor drain at an existing mech joint, and Points 25 and 26 each featuring 4-inch 90-degree bends. The drawing includes general notes indicating that the contractor must field verify connection to existing floor drain at deck level and that the project exists in-place. Scale references and professional certification stamps are provided at the bottom of the sheet.