Errol L. Montgomery & Associates

June 29, 2012

A response to the May 3, 2012 letter from Coronado National Forest (CNF) concerning their review of documents submitted in support of groundwater impacts for the Rosemont...

January 13, 2012

August 18, 2011

At the request of Rosemont Copper, Montgomery & Associates (M&A) evaluated...

August 5, 2011

At your request, MWH Americas, Inc. (MWH) has reviewed the input and output (I/O) files prepared by Montgomery and Associates (M&A) for the simulations of Rosemont Copper’s mine supply...

April 11, 2011

During post-submittal review of the Rosemont Mine model submitted in 2010, Montgomery & Associates (M&A) determined that precipitation...

January 13, 2011

This memorandum provides a technical review of the full version of the report Regional Groundwater Flow Model Rosemont Copper Project (Tetra Tech, 2010i) dated November 2010. This review was...

November 12, 2010

This addendum includes additional explanation and analysis for the groundwater flow model used to simulate impacts of water supply pumping for the Rosemont mine as part of an EIS.

March 1, 2010

This tech memo compares the natural groundwater fluctuations of the system near the Rosemont property with the drawdown predicted by the hydrogeologic model.

May 21, 2009

Additional investigations for the Phase 2 hydrogeologic characterization program for the proposed Rosemont mine, included a long-term multi-well aquifer...

April 24, 2009

January 1, 2009

Montgomery & Associates developed a groundwater flow model designed to simulate conditions prior to pit development, during pit dewatering...

Montgomery & Associates conducted groundwater flow modeling investigations for simulation of mine supply groundwater pumping from proposed locations near Sahuarita.  Investigations...

In accordance with the Phase 2 hydrogeologic characterization program for the proposed Rosemont Mine, 27 groundwater wells and 3 multi-level groundwater piezometers were constructed in the...

This tech memo describes updates to the Arizona Department of Water Resources (ADWR) Tucson Active Management Area Model in the vicinity of Sahuarita and Green Valley.

December 1, 2008

This tech memo describes updates to the Arizona Department of Water Resources (ADWR) Tucson Active Management Area Model in the vicinity of Sahuarita and Green Valley.

February 13, 2008

This memo describes current plans for implementation of the groundwater monitoring program for the Rosemont Project.

June 1, 2007

Presents groundwater protection concepts.

April 27, 2007