Two key components in the life cycle of water are the initial source and its ultimate reuse. The ECO:LOGIC hydrogeology team focuses on these two components through 1) developing groundwater sources and designing wells that are highly efficient and that minimize the potential impacts on the environment and 2) providing technical solutions for the reclamation and reuse of treated wastewater.

ECO:LOGIC personnel have been responsible for completing hundreds of well projects in the western U.S. These have included municipal water supply wells, monitoring wells, groundwater exploration wells, low-temperature geothermal production and injection wells, dewatering wells, and wells used for aquifer storage and recovery. We have managed the construction of wells completed with casing diameters of up to 48 inches and depths to 3,300 feet. Our wells have realized specific capacities of 400 to 500 gallons per minute per foot of drawdown and yields of over 5,000 gpm. Our experience includes wells drilled by air-rotary, direct mud-rotary, reverse fluid rotary, dual-tube reverse air-rotary, flooded dual-tube reverse rotary, cable tool, hollow-stem auger, and rotary vibratory (sonic) drilling methods.

Our staff has devised drilling programs to deal with volcanic terrain and the lava flows are inter-bedded with large gravel, karst terrain, heterogeneous glacial outwash deposits, highly non-cohesive sands and gravels, water-reactive clays, flowing artesian conditions, and conditions where the fluids flash to steam. Although we are not well drillers, our wealth of experience constitutes a resource that clients and drillers often tap to help solve difficult problems; we know which procedures are applicable to a range of drilling conditions.

Relevant Well Projects

City of Lincoln - Moore Road Well, Westwood Well, Well 2 Rehabilitation

The City of Lincoln plans to construct a well field with a capacity of 20 mgd to provide system peaking capacity and a backup to its surface water source. ECO:LOGIC provided construction management and inspection services for several recent well drilling and construction projects for the City of Lincoln. Due to the recent addition of these wells, the HGL was raised such that some existing wells will require modifications. ECO:LOGIC is currently designing upgrades to an existing well to meet the higher HGL as well as meet new minimum standards.

SunCal Exploratory Wells

Three exploratory wells were constructed by the SunCal Corporation for the City of Lincoln to evaluate potential municipal well sites southwest of Lincoln. The project entailed drilling nominal 6-inch diameter boreholes by the mud-rotary method, acquiring a comprehensive series of advanced borehole geophysical logs, and completing the wells with 2½ inch diameter well casing. The wells were equipped with data loggers to monitor the effect of pumping nearby wells on water levels in the aquifer. The program yielded data regarding water quality and the hydraulic properties of the aquifer near Lincoln and identified a well site with the potential for a high-yield municipal well.

Longley Lane Monitoring Well

A 6-inch diameter monitoring well was completed to assess the aquifer properties and chemical quality of the alluvial aquifer in the southeast Truckee Meadows of Washoe County, Nevada. The well entailed drilling a nominal 6-inch diameter borehole by the mud-rotary method to 500 feet and acquiring borehole geophysical logs. The total time for the drilling project, including planning, environmental permitting, subcontracting for drilling services and well construction, was three weeks. The well was completed in 5 days.