2026 Test Well 25 Construction

The City of Caldwell, Idaho will receive bids for 2026 Test Well 25 Construction . Bids are currently due on or before 2:00 pm , on Tuesday, June 16, 2026 .

The City of Caldwell is requesting bids for construction of a test well at the Caldwell Housing Authority property, located at the southeast corner of State Highway 44 and Farmway/Kent Ranch Road in Caldwell, Idaho (NWNW Section 9, T4N, R3W). The project site is located on approximately 0.59 acres of Caldwell Housing Authority property and includes sufficient access and working space for drilling operations and associated equipment. The proposed test well location meets applicable Idaho Department of Water Resources (IDWR) Well Construction Standards and has been selected to allow future correlation of test well results with the planned municipal supply well. The test well location will be surveyed and staked prior to construction.

The project consists of drilling and construction of a multi-level monitoring test well to an anticipated maximum depth of approximately 600 feet. The test well is planned to include up to seven (7) individual monitoring wells within a single minimum 19-inch diameter borehole with 20-inch diameter steel surface casing, with the potential for an additional shallow monitoring well if needed. Monitoring wells are anticipated to consist of 4-inch diameter Schedule 80 PVC casing and slotted PVC screen, designed to accommodate low-capacity test pumping for groundwater quality evaluation. Final screen intervals and well configurations will be determined based on subsurface conditions encountered during drilling, including review of drill cuttings and geophysical logs.

Work includes installation of surface casing and annular seals in accordance with IDWR standards, drilling of a pilot borehole, collection of lithologic samples, and completion of geophysical logging including normal resistivity, single-point resistance, and gamma logs. Graded sand filter packs and cement-bentonite annular seals will be installed between screened intervals to hydraulically isolate targeted aquifer zones. The collected drilling and geophysical data will be used to evaluate aquifer characteristics and groundwater quality, and to finalize completion intervals for the monitoring wells.

Prospective bidders are requested to attend a non-mandatory pre-bid meeting at 2:00 PM on Wednesday, June 3rd, 2026, at the Work site. The site is located at the Caldwell Housing Authority on the southeast corner of State Highway 44 and Farmway / Kent Ranch Road.