01-17-84 CCM - Laserfiche WebLink

Home Browse Search

LAKE ELMO CITY COUNCIL MEETING JANUARY 17, 1984 Mayor Eder called the meeting to order at 7:05 p.m. in the Council Chambers. COUNCILLORS PRESENT: Dunn, Mazzara and Morgan. Also City Administrator IClaers. 1. AGENDA - M/S/P Morgan/Mazzara to adopt the agenda as amended: 9-B. Dunn - Parking on 36th Street 10-F. Dismissal of Hutchinson Suit 10-G. Variance, Green Acre Lot 9 - Public Hearing (Carried 4-0) 2. MINUTES - M/S/P Morgan/Mazzara to approve the 1/3/84 Council minutes as written. (Carried 4-0) 3. CLAIMS - M/S/P Morgan/Dunn to approve Claims 84479 thru 84524 with the addition of Claim 84525 for $2,303.08 for continuation of public-official/fire- fighter liability insurance. (Carried 4-0) 4. LANDFILL, MICHAEL AYERS - Mr. Ayers explained (a) gradient control system, how it is operational, and preliminary findings; and (b) landfill advisory committee being proposed to look into supplying an alternate water system to the adversely affected residents of the Lake Elmo area as a result of the landfill. A. Gradient Control System - Pumping has been operational since 12 November 1983 and has run consistently since that date - has been tested under some of the most adverse winter conditions. Testing done so far shows that system is changing gradients of the ground water in that area; as a result of measuring elevations in the local residential and monitoring wells, we're seeing an actual reversal of ground water movement to the southwest. It is pumping at a capacity of 260 gallons per minute (actual capacity 500 g.p.m.). It pulls to the furthest impacted well (Huseman well) and there's an actual decrease in elevation, about 1 to 1.5 feet where it will be stabilized (residents' ability to use thier wells has not been impacted). Next we propose to do some testing of those contaminated wells to see if we're actually beginning to see a decrease. This will be preliminary only to see if concentration levels are being reduced. Aeration is a pivot gun on a turret that sprays under high pressure to volitalize off organic compounds found in the ground water. Three tests done to date have shown a marked decrease, if not a total absence, of the contamination from the the time water is sprayed to the time it lands on the, ground. Initial testing shows all the organic contaminants were removed, but recent testing in severe cold does not show volatilization expected. Minnesota Department of Health has agreed to extend permit to end of June 1.984, Minnesota Pollution Control Agency has issued permit for continuous pumping, and Watershed District is monitoring and has been requested to extend permit. We hope in near future that consultant will come in with final report on the effectiveness of this system. It appears, at this time, the system is effective in its intended purpose and will not have to be expanded. ♦ Mazzara - Will runoff from ice build-up be a problem? (Ayers - No, it runs underneath the ice pack in the snow; also ground area is terraced.) • Morgan - How deep is the well? (Ayers - Around 120 feet, to bedrock.) • Morgan - What chemicals are you stripping? (Ayers - Basically, the chlorinated organic compounds, the prime contaminants we've seen out there.)