Z--DUMONT DUNES ROAD SHOULDER STABILIZATION

Scope of Work or Services: OBJECTIVE: The Bureau of Land Management (BLM) seeks a qualified contractor to provide road operation and maintenance (O&M) for Dumont Dunes Road located 40 miles north of Baker, CA. The road shoulder was heavily eroded and scoured with significant material lost caused by Tropical Storm Hiliary. A. Description of Work: Furnishing labor, equipment, supplies, and material, to complete the necessary work as described. 1. Site Preparation: a. Clear area of any loose materials, debris, vegetation, or obstruction that could interfere with road re-surfacing. b. Proper Grading – to allow water runoff and prevent water pooling or accumulation. Shape the subgrade no greater than 2% cross slope. c. Excavate road shoulder, ensure optimal moisture, then place geosynthetic materials, backfill geoweb with native material, cap top 6” with Class 2 aggregate road base and compact. Use only clean water. 2. Placement (Spread and Compaction): a. The Government will furnish all geosynthetic materials (non-woven fabric, stakes, ATRA keys, and geoweb). b. Spread aggregate road base (Class 2) evenly or uniformly with road grader, no more than 6 to 8-inches per lift thickness at a time. c. Properly water the aggregate road base to help during compaction, especially if it is dry. d. Proper compaction is crucial for a durable surface and prevents settling. Requires multiple passes with a roller compactor to achieve proper density and eliminate air voids within the aggregate base material, ensuring aggregate base material is well- compacted. e. Final compacted road shoulder aggregate base thickness is 6 inches. f. Spread excess aggregate road base in the immediate areas and compact as determined in the field by the Government. g. Daylight to existing ground. 3. Environmental consideration: a. Control dust during installation and minimize site disturbance to immediate surroundings. b. Responsible for the removal and proper disposal of all trash, debris, and construction waste it generated during construction activities. c. Sweep road asphalt pavement surface free of dirt and rocks. d. Shall immediately contain, clean up, and properly dispose of any oil or hazardous materials spills in accordance with federal, state, and local environmental regulations. 4. Traffic Control: a. Comply with requirements of authorities having jurisdiction. b. Protect existing site improvements to remain including curbs, pavement, and utilities. c. Maintain access for the recreating public and emergency personnel. d. Minimize interference with adjoining roads, streets, walks, and other adjacent occupied or used facilities during site-clearing operations. e. Do not close or obstruct roads without permission. -- 1 of 2 -- f. Provide alternate routes around closed or obstructed trafficways if required by the Government. 5. O&M road shoulder work area is approximately 300 ft in length. a. Shoulder repair site: 35.696338, -116.251482 6. Work deemed unsatisfactory by the Government must be removed and replaced by the contractor. PERFORMANCE PERIOD: Contractor has 7 calendar days to complete O&M road work. No weekend work is allowed. SUBMITTALS REQUIREMENT: Provide material specifications and list of equipment. PROJET LOCATION: Dumont Dunes Road (off Hwy 127—Death Valley RD) San Bernardino County, CA Lat/long coordinates: 35.692295, -116.302901 POINT OF CONTACT: Ike Miller: 760-718-0640 (c) Sai Syhaphom: 909-226-6340 (c) Fig #1 – O&M work limit (area). -- 2 of 2 --