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<br />SOUl~ ~gr~ Groundwater Model Development Report <br /> <br />Oct. ]f, 2001 <br />Page 18 <br /> <br />) <br /> <br />6.0 <br /> <br />SCREENING OF HYDROGEOLOGIC DATA FOR <br />SOUTH METRO AREA <br /> <br />Th~ purpose of this section is to describe the data, data screening methodologies, and <br />results of data screening for the SB-74 Denver Basin Groundwater Model. On April 16, <br />2001, we submitted a memo describing our initial evaluation of the SB-74 model, <br />comparing model property values and distributions to Denver Basin hydrogeologic data <br />reports. This section updates that analysis by comparing SB-74 parameters to data <br />provided by South Metro water providers, as well as information contained in the SEO's <br />Denver Basin groundwater database and in the USGS National Water Information <br />System (NWIS) groundwateT database. <br /> <br />\ <br /> <br />Section 6. I provides an overview of the various data sets used in reviewing the SB-74 <br />model and explains the methodology used to screen the data. Section 6.2 presents the <br />screening results to date, and Section 6.3 considers the implications of the screening <br />results. <br /> <br />6.1 Data Overview And Screening Methodology <br /> <br />Participating water providers have gathered site-specific data for inclusion into the <br />groundwater modeling effort. The data requested by the Study Board included: <br /> <br />1) Transmissivity (7) <br /> <br />2) Hydraulic Conductivity (K, derived by dividing T by full aquifer thickness) <br /> <br />3) Aquifer storage coefficient <br /> <br />4) Specific Yield (Data where available, decreed where so given) <br /> <br />5) Vertical conductivity between layers, if available <br /> <br />6) Aquifer top and bottom elevation (presumably from lithologic picks from well <br />logs) <br /> <br />7) Well screen elevations <br /> <br />Hydrosphere Resoun::e Consultants <br />1002 Walnut Suite 200, Boulder, CO 80302 <br />PO Box 445, SocornJ, NM 87801 <br />