Resolution - #93-12-285 Draft - 12/14/1993

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Ms. Dahlgren inquired if the materials would be received from the Metro Area, State of Minnesota or outside the State of Minnesota. Mr. Otter replied that the material would be from the greater Metro Area. He added that once you go beyond certain mileage, it is no longer cost-effective. Ms. Dahlgren stated she spoke to a woman from Lebanon, Connect/cut, who stated that the biggest problem is the odor and being left with windrows. I I I I I I I i :1 I I I Mr. Naylor stated that the composting process takes about two weeks, then it is held another week. He described the compost process. Ms. Dahlgren inquired if the material went anaerobic to which Mr. Naylor replied no because of the daily agitation. Ms. Dahlgren inquired about the temperature to maintain piles of compost. Mr. Naylor replied that for pathogen kill, the temperature is kept at 55° Cent/grade for three days (or at a higher temperature for less days) plus an average of 45° Fahrenheit for 14 days to make sure the biodegradables are biodegraded so when the material is stored outside it will not attract flies, gnats or rodents. Ms. Dahlgren inquired what the life of the biofflter is. Mr. Naylor replied that the filter can last from five to ten years and is typically made of leaves, bark and wood chips to absorb the odor. He stated the pressure in the facility is monitored and when the pressure is too high, the filter has to be replaced. Ms. Dahlgren mentioned the moisture laden air and inquired if the microorganisms were able to keep up with the breaking down of what is being fed. Mr. Naylor stated it is very dry, not moist, and they have to make sure the biofilter stays wet enough. Ms. Dahlgren inquired how quick the recovery on negative pressure in the building is once the door is open and what the CFM rate of exchange is. Mr. Naylor stated that the cubic foot per minute is 60,000 to 80,000. The odorous air over the compost area is enclosed between vinyl strips to keep inside air in if warm and outside air out if cold. The same thing is in the middle of the bay and it keeps the air in. He stated that most odorous air is encapsulated so it cannot get out. A resident inquired if additional permits, other than those held by the landfill, would have to be acquired. Mr. Steve Kollodge stated that a conditional use permit would have to be obtained from the City of Ramsey, Anoka County would have to issue a license, a permit would have to be attained from the Minnesota Pollution Control Agency and the Metropolitan Council would have to grant it's approval. I I I I A resident inquired if the compost would be used to cover the landfill. Mr. Kollodge stated that they would not use it for cover but they would like to use it for the restoration of the borrow area. A resident stated that she had heard rumors that the City was supposed to get parks or a ski hill from the landfill.