Desert Hills Water Tank

Ninyo & Moore performed geophysical testing followed by a design geotechnical evaluation for the Desert Hills Water Tank. The project involved design and construction of a 750,000 gallon water storage tank 64 feet in diameter and 32 feet tall on an existing fill pad. The project also included design and construction of an expansion of the existing pad including new fill and cut areas. The purposes of our study were to evaluate geotechnical conditions at the site and to provide geotechnical recommendations for earthwork and construction of the proposed tank foundation and pad expansion. Ninyo & Moore's services included performance of geophysical seismic refraction surveys to evaluate the rippability of the subsurface soils and bedrock, and to provide profile models of layered earth structure at the locations we surveyed; 4 test pits to depths of up to approximately 15 feet; performance of laboratory tests to evaluate the engineering properties of the subsurface soils; and preparation of a written report presenting our findings and geotechnical design recommendations, including recommendations regarding anticipated excavation characteristics, ring foundation design parameters, and construction considerations.