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Response letter- from Stephen Rohlf, Building &Zoning Adm., dated April 2, 1997 • Elk River Landfill's proposed"Long Term Development Plan", dated March 1997 Additional cover letter-from John Cannon of Camp Dresser& McKee, dated April 15, 1997, which includes revisions to the Long Term Development Plan originally submitted Map of site operations Revised draft conditional use permit and license SIGNIFICANT ISSUES Revised MPCA permit- Since the city's permits reference approvals given in MPCA's permit it is critical that changes to MPCA's permit are reviewed and approved by the city. The draft conditional use permit and license reference the most recent plans, deadlines, and documents submitted to MPCA by the landfill. Corrective action-The first cells developed at the landfill were unlined and, consequently,have resulted in ground water contamination. Methane gas has also migrated pass the landfill's boundaries. Besides assuring that the landfill is currently operating in an environmentally correct manner,the other major goal of the city's permits • is to get the ground water contamination corrected prior to it leaving the landfill's site. The landfill has and will continue to install active gas venting to control methane gas migration. This venting system also works in conjunction with the final cover system to reduce the extent of volatile organic ground water contamination. The City's conditional use permit and license contain language requiring coordinated monitoring of gas and ground water so the results of the active gas venting can be properly analyzed. The City's conditional use permit and license also contain language regarding remedial actions to be taken in addition to active gas venting if this action does not produce the desired result. Expansion - Figure 2 in the attached Long Term Development Plan shows the original permitted 40 acre landfill site (cells 1-11). This drawing also reflects the proposed 52 acre expansion(cells 12-18). Please note that there is a 200 foot buffer area around the expansion area which is mostly wooded on the south and west sides. Staff is recommending approval of this horizontal expansion to the extent to be permitted by MPCA. In fact,this expansion was anticipated when the city approved a rezoning of the property involved to Solid Waste Facility Overlay District. The questions for this amendment are how this expansion will take place. • The Planning Commission needs to consider land use issues such as preservation of adjacent property values, orderly development of surrounding properties, impacts on Lanfil97