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Public Works Memorandum <br /> NO. 2015-13 <br /> DATE: March 23,2015 <br /> TO: Honorable Mayor McElroy and City Council <br /> FROM: Timothy Gleason, City Manager <br /> Richard G.Marley,P.E.,Director of Public Works <br /> SUBJECT: Ordinance Prohibiting the Use of Groundwater <br /> Clark Oil and Refining, 1251 North Hill Avenue <br /> SUMMARY RECOMMENDATION: <br /> It is recommended that the City Council approve the attached Ground Wat�Ordinance prohibiting <br /> the use of groundwater as a potable water supply for the former Clark Oil Refining business site <br /> located at 1251 North Hill Avenue. This is a portion of the property contai 'ng the new County <br /> Market at Grand and Oakland. <br /> PRIOR COUNCIL ACTION: <br /> There have been no prior Council actions regarding ground water contamination for the former <br /> Clark Oil site located at 1251 North Hill Avenue. <br /> Prior Council Action on Ground Water Ordinances: <br /> Since 2002,the City Council has authorized 20 ground water ordinances at various locations in the <br /> City. <br /> BACKGROUND: <br /> Ground Water Ordinance: <br /> City staff was contacted by Fehr Graham Engineering &Environmental, who represents the owner <br /> of the former Clark Oil station located at 1251 North Hill Avenue regarding their remediation <br /> efforts resulting from chemicals that have infiltrated into the ground from leaking petroleum tanks <br /> at the site for many years. <br /> A Ground Water Ordinance is a tool used by the Illinois Environmental Protection Agency (IEPA) <br /> to remediate properties where soil and ground water under the site have be n contaminated by <br /> chemicals. The ordinance prohibits the use of groundwater as a potable water supply for the area <br /> identified on Exhibit A as having the maximum potential for ground water contamination from <br /> petroleum that was released from the site over the years. <br /> The major benefit of a ground water ordinance is that it serves to keep con aminated water isolated <br /> underground and not allow it to be used for human consumption. The gro d water use prohibition <br /> area is served by the City's public water supply so the prohibition will not create a hardship for area <br /> residents or businesses. <br /> Page 11 <br />