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PROGRESS REPORT <br />Project: EIS Review for Proposed Landfill Site G in Lake Elmo <br />Project #: 5175.001 <br />Date: February 21, 1991 <br />Reporting Period: 11/26/90 - 1/25/91 <br />Activities Undertaken During the Reporting Period <br />During the reporting period (November 26 to January 25) DPRA reviewed the <br />"Engineering Design Concept Technical Memorandum", November 1990, to obtain <br />values for the input parameters to DPRA's Municipal Landfill Failure and <br />Release Model. DPRA also began reviewing the literature to determine <br />"typical" municipal landfill leachate constituents for use in landfill <br />release and groundwater modelling. Subcontractor labor and expenses for <br />September, October and November are included on this invoice. During that <br />period, Geraghty and Miller staff continued their modelling analysis of Site <br />G, initially using a single layer analytic element model. <br />Activities Anticipated Next Month <br />During the next reporting period, DPRA will identify "typical" organic and <br />inorganic leachate constituents, their concentrations, and how those con- <br />centrations change over time. This will be incorporated in our source term <br />model to assess constituent release rates and concentration profiles for input <br />in Geraghty and Miller's groundwater model. Fletcher Driscoll will provide <br />expert testimony on Site G hydrogeologic conditions through a video being <br />produced on the Lake Elmo landfill siting process. <br />Changes in Personnel and Schedule <br />No changes in personnel are anticipated. A project meeting with Kelton Barr <br />of Geraghty & Miller is scheduled for Monday, February 25, 1991 to discuss <br />progress on the groundwater modelling task. <br />