Agenda - Council - 01/14/1986 - Laserfiche WebLink

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I I I :1 I I I I I I I I I I I I I MEMO TO: FROM: DATE: RE: Ramse¥ City Council City Engineer January 7~ 1986 Report on the December 19, 1~85 Meeting on the Status of Anoka Groundwater Investigation the As requested at your December 17, 1985 council meeting, I attended the December 19, 1985 meeting of the Anoka County Environmental Services Committee. The meeting consisted of a presentation by Waste Management, Inc. and Hickok and Associates on the status of the remedial groundwater investigation of the Anoka Sanitary Landfill. Mr. Larry Johnson, the Project Manager from Hickok and Associates reported the following conclusions he had reached from the investigation: 2. 3. 4. The landfill has no impact to the west and north. The landfill has limited impact to the southeast. The bedrock is approximately 100 feet below the ground surface. The landfill is underlain by the Grantsberg Till which slopes in all directions. Both the bedrock and the drift groundwater elevations slope to the southeast. The groundwater on the west side of the landfill is high in nitrates and chlorides. He believes the high levels are due to on-site wastewater disposal systems. The contamination at Well No. 8 is located above the till. No contamination has been found along Sunfish Lake Boulevard. All contamination found to date is restricted to Waste Management property. Contaminant levels found at the Anoka Landfill are low compared to other landfills. The landfill impact is a manageable situation. Waste Management indicated that there were several things which would require further investigation. Those items are as follows: The extent of the contamination on the south and southeast both vertically and horizontally. To prove that the high level of nitrates and chlorides on the west side of the landfill are not coming from the landfill Waste Management proposes to add two piezometers. 3. Water quality in the lower shallow drift.