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PROGRESS REPORT <br />Project: EIS Review for Proposed Landfill Site G in Lake Elmo <br />Project #: 5175.001 <br />Date: April 11, 1991 <br />Reporting Period: 2/26/91 - 3/25/91 <br />Activities Undertaken During the Reportinq Period <br />During the reporting period (February 26 - March 25, 1991), DPRA completed <br />the literature review to determine typical leachate constituent con- <br />centrations from both municipal solid waste and ash landfills. This data was <br />used, in conjunction with proposed design information obtained from the <br />Engineering Design Concept Technical Memorandum prepared by Donohue <br />Engineers, as input to DPRA's landfill failure and release model. <br />Preliminary landfill model runs and results have been completed and analyzed. <br />Additional technical support was provided to Colle & McVoy Public Relations <br />in the completion of the Lake Elmo landfill siting video. Fletcher Driscoll <br />of Geraghty & Miller provided expert testimony on Site G hydrogeologic con- <br />ditions for the video. Subcontractor labor and expenses for January and <br />February will be included on next month's invoice. <br />Activities Anticipated Next Month <br />DPRA will complete final source term model runs to assess landfill release <br />rates for input to Geraghty and Miller's groundwater flow model. Preliminary <br />groundwater model runs, which were initiated in February and continued in <br />March to evaluate flow conditions at Site G (i.e., in the absence of leachate <br />concentration data, only groundwater flow is analyzed) will be completed by <br />April 15. No new groundwater model runs will be conducted until the Health <br />Risk memorandum becomes available. <br />Changes in Personnel and Schedule <br />No changes in personnel are anticipated. <br />