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<br />5432 <br /> <br />MEMORANDUM <br /> <br />) <br /> <br />TO: Peter Binney, John Hendrick <br />FROM: Jim McCord, Hydrosphere <br />SUBJECT: S. Metro Water Supply Study Regional Groundwater Model Requirements <br />DA TE: Jan. 8, 200 I <br /> <br />This memorandum presents the draft model requirements as derived from infonnation provided <br />by the South Metro Water Supply Study Board ("the Study Board"). This infonnation includes: <br />(a) Study Board background written materials (e.g., the 12/1/99 SMWWS Scope of Work and the <br />7/19/2000 SMWSS Regional GW Model RFP), (b) the oral feedback obtained at the 11/17/2000 <br />Study Board Peer Review meeting, and (c) responses to an explicit requirements query sent by <br />Hydrosphere to selected Study Board members I by Peter Binney and Jim McCord on <br />11/27/2000. <br /> <br />We begin with a summary of modeling objectives, systems to be modeled, and critical modeling <br />issues. We then present an overview of our proposed model development approach. <br /> <br />\ <br />), <br /> <br />1. MODEL OBJECTIVES <br />The overall purpose of the S. Metro Water Supply Study is to "to provide a framework to define <br />and evaluate one or more water supply strategies that meet the near- and long-tenn water needs <br />of Authority members participating in the study." <br /> <br />This memo describes a groundwater model that is being developed to support Study Board <br />activities. The objective of the groundwater model is to illustrate likely responses by the <br />Denver Basin bedrock aquifer system (Dawson, Denver, Arapahoe, and Laramie-Fox Hills <br />aquifers) to pumping stresses so water managers can evaluate effective long tenn strategies and <br />programs. <br /> <br />The Study Board desires a regional groundwater flow model that will help address questions in <br />several key areas, including: <br /> <br />I) Regional and local (well and well field) head drawdown rates in Denver Basin <br />aquifers over the next 100 years, <br /> <br />I John Hendrick! Centennial, Frank Jaeger! Parleer, Pat Mulhern! Inverness - Cottonwood, Chris Schuyler- <br />) Rossi! Denver Water, Jim Pearce! CRWCD, Dave Kaunisto! ECCVWSD, Will Koger! Town orCastl. Rock <br /> <br />.0./ <br /> <br />Hydrosphere Resource Consultants <br />1002 Walnut Suite 200, Boulder, CO 80302 <br />PO Box 44S, Socorro, NM 8780 I <br />