Montgomery & Associates

Groundwater monitoring in the upper Queen Creek and Devils Canyon watersheds was initiated by RCM in early 2004.  The current RCM groundwater monitoring program includes 19 wells, boreholes or shafts.  Based on results of hydrogeological characterization studies conducted to date, three principal aquifers have been identified.  The purpose of the groundwater monitoring program is to provide hydrologic data for continued development and refinement of the conceptual hydrogeologic model for the ALT aquifer and adjacent aquifers in the study area that might be impacted by block-c

This technical memorandum was prepared to provide an interim summary of data collected at wells DHRES-01 and DHRES-02. Deep hydrogeologic test wells DHRES-01 and DHRES-02 were drilled and constructed during the period May 2 to September 10, 2008. In order to measure hydraulic heads at specific elevations in the Apache Leap Tuff (Tal) and Whitetail Conglomerate (Tw), vibrating-wire pressure transducers were grouted in the annulus between the borehole wall and conductor casing at wells DHRES-01 and DHRES-02.

This technical memorandum was prepared to summarize the results of a long-term aquifer test conducted at Resolution Project hydrologic characterization well HRES-4. Well HRES-4 is completed in the Apache Leap Tuff aquifer near Oak Flat, in the upper Queen Creek drainage basin of eastern Pinal County, Arizona.