The liners control erosion, prevent seepage and absorb loading stresses. He removed the unsuitable material and replaced it with select clay fill. The paver started at the top of the slope and paved to the bottom. The rolling pattern on the slopes was up and down with no compaction percentage specified. Bottom rolling was done with a double drum roller.
Raw water is the resource used for finished drinking water.
Advanco Constructors of Upland, California, was the general contractor and Best Western Paving of Walnut, California, did the paving. It was composed of 2 inches of hydraulic asphalt, and 4 inches of porous HMA topped with 4 inches of hydraulic asphalt. Approximately 120,000 tons of HMA were placed on the project. Subcontractor Southern California Grading, Inc. first removed an extra 5 feet of subgrade material and replaced it with select fill material. After priming, Best Western placed the 2-inch lift of impervious, hydraulic asphalt on the reservoir's sides and bottom.