C5_Attach 3_Gravel Pit Drawings 02.pdf

This is a Pit Development Plan drawing for a gravel crushing operation located on United States Forest Service (USFS) land in the Rocky Mountain Region. The project, titled "Columbine Gravel Crushing," is situated in Grand Mesa, Uncompahgre and Gunnison National Forests within the Ouray Ranger District. The plan was prepared on 06/25/2026 by designer C. Phelps and includes detailed site specifications for excavation and material processing operations.

The pit development plan establishes operational parameters including excavation limits flagged on-ground by the Contracting Officer prior to operations, written approval of the stockpile area by the Contracting Officer, slope specifications with no steeper than 1.5:1 upon completion, clearing limits to be specified on-ground by the Contracting Officer, pit drainage sloped between two designated points at a minimum of 2-4 percent grade, and proper establishment and maintenance in accordance with Forest Service Section 629 Turf requirements. The schedule of items details specific work requirements including mobilization with obtaining insurance and bonds, dust control/water supply with state certified scale calibration and initial verification, contractor quality control with state certified belt scale calibration and daily verifications, contractor haul testing and verification, stockpiled aggregates with grading designation noted in a referenced table, and general labor with specialized tasks including surveys and UAV drone surveys. Equipment and personnel requirements include one UPSM unit for mobilization, dust control, and quality control operations, with stockpiled aggregate volumes reaching 16,000 tons.