Elizabeth George Water Treatment Plant – Nevada City, CA

Holdrege & Kull performed a geotechnical investigation, prepared a storm water pollution prevention plan (SWPPP), and provided materials testing and special inspection services for construction of this facility. Improvements included reinforcement and improvement of existing facilities and construction of new structures, including a flocculation/ sedimentation basin, gravity filter, and clarification basin, along with paved roadways and underground utilities.

 The geotechnical investigation included site reconnaissance, literature review, site investigation, and a subsurface investigation. Relatively undisturbed soil samples and bulk soil samples from 15 exploratory borings were collected and tested in order to provide recommendations for earthwork and structural improvements.

 H&K also prepared the Storm Water Pollution Prevention Plan (SWPPP) for the project and provided materials testing and special inspection during mass grading, backfilling of utility trench excavations, preparation of subgrade, and construction of aggregate base.