HWA provided geotechnical engineering evaluations in support of the upgrades to lift stations 16-18 and conveyance improvements on 17. Tasks included a geotechnical engineering study, exploratory borings, and testing on selected samples to characterize relevant engineering and index parameters of the site soils. HWA performed engineering analysis, laboratory testing, and specific design and construction considerations for each site (seismic and landslide hazard areas were also addressed).

HWA served as lead geotechnical engineer for the Phase I Improvements, which included a new 0.5-million-gallon above-ground water tank, stormwater facilities, and pump upgrades. HWA coordinated field explorations, advancing one machine-drilled boring with SPT sampling and lab testing, and later performed two pilot infiltration tests. HWA assessed soil, rock, and groundwater conditions and provided geotechnical recommendations for tank foundations, stormwater infiltration and construction design.

HWA provided geotechnical engineering studies to evaluate the soil and ground water conditions in the vicinity of the existing lift station and provided recommendations for design and construction of the improvements. Work included site reconnaissance, subsurface investigations, and geotechnical engineering analyses. Field work included exploratory borings and installation of a monitoring well, with subsequent checks for groundwater as well as lab testing on selected soil samples.