"Where Fillmore County News Comes First"
Saturday, November 29th, 2014
Volume ∞ Issue ∞
- 8:03:53, Nov 24th 2014 - FountainFarmer - Doc, Why do people like you have to turn stories that don't have ... [Read More]
- 7:13:36, Nov 21st 2014 - FountainFarmer - doc, why do people like you think that every story needs a sense ... [Read More]
- 3:50:54, Nov 21st 2014 - Frank Wright - Does the author of this article realize it is not April 1st? ... [Read More]
- 3:03:32, Nov 21st 2014 - Roberto - That IS a stereotype on Libertarians from extreme right-wingers BTW. See ... [Read More]
- 5:10:46, Nov 17th 2014 - doc - I'm surprised conservatives aren't picketing there for their war on women. ... [Read More]
- 5:09:30, Nov 17th 2014 - doc - Is it illegal to push THEIR snow into the street though? ... [Read More]
- 4:16:40, Nov 15th 2014 - Gudrun - Ralph's burial at Arlington National Cemetery is scheduled for February 12, ... [Read More]
- 4:47:53, Nov 7th 2014 - KingslandGrad95 - Hey winters coming, why don't you take your concerns to that of the ... [Read More]
- 6:43:44, Nov 6th 2014 - winters coming - Tell Fillmore central in harmony that it is against the law to push t ... [Read More]
- 11:34:53, Nov 3rd 2014 - Tom Kaase - First of all, thank you again to Editor Jason Sethre for allowing people ... [Read More]
Fri, Oct 4th, 2002
Posted in Features
Posted in Features
At its regular September meeting, the Fillmore County Planning Commission heard a presentation from Kevin Janni of the University of Minnesotaís Biosystem and Agriculture Engineering program on research that has been conducted on feedlot odors and potential building setbacks.
The olfactory project in which Mr. Janni has been a leader, attempts to determine just what the average human nose can smell, under average conditions, at different distances from an odor source. Using trained smellers, or human odor detectors, odor modeling, and a scientifically developed odor intensity scale, the research has yielded a setback estimation tool called OFFSET that planners and local governments can use to establish residence setback requirements from feedlots. The planning commission special program was well attended by county commissioners, township officers, feedlot operators, and county citizens who live near feedlots. Two of the seven men who make up the countyís planning commission were absent. The research work that Mr. Janni presented, funded in part by the university, the legislature, and the Minnesota Pork Producers Association, was conducted at confined animal feedlot operations in southeast and central Minnesota, and was confined to measuring odors from the feedlots themselves and not from the odors associated with the application of manures on agricultural lands. The odor model includes a variable sliding scale of "nuisance free" setbacks, whereby officials select a percentage of nuisance-free time as the threshold that determines the actual setback requirement. For example, a 99 percent nuisance-free threshold would require a greater setback distance, perhaps as much as four to six thousand feet, and should only allow neighbors to detect the odor on an average of seven hours each month. According to Mr. Janni, most feedlot odor complaints come from people at a distance closer than the 94 percent nuisance-free threshold. A sliding scale displayed by Mr. Janni showed that as the percentage of nuisance-free tolerance is reduced, so, too, is the setback distance reduced. According to Mr. Janni, county officials, should they adopt Mr. Janniís program, could decide which nuisance-free threshold they would use for particular areas. Mr. Janni indicated that Nicollet County has implemented the model and used different nuisance-free thresholds depending on the proximity to development, cities, or communities. After explaining how the modeling program worked, Mr. Janni discussed odor reduction strategies that feedlot operators can implement to work in concert with the OFFSET tool. These strategies included the installation of biofilters, geotextile filters, manure crusting, impermeable covers, and oil sprinkling. The Fillmore County Feedlot Officer, Mike Frauenkron, has encouraged the county to look into the use of biofilters for feedlots as a way to reduce odor emissions. These filters are basically large, organic beds of wood chips located on the exterior walls of the containment buildings at the exhaust source. In a biofilter system, odorous air is funneled by fans from the manure storage pit directly into the bed of wood chips where microorganisms destroy the odors. The cost of a biofilter is estimated to be about $150 to $200 per 1000 cubic feet of air treated. "We think biofilters are effective," explained Mr. Janni. However, Mr. Janni also noted that "odor control is more of a challenge on curtain-sided barns," a style that is typical of hog confinement buildings that are constructed in Fillmore County. He also noted that during the humid summer and fall a biofilter might only treat about one third of the air. Mr. Lynn Tienter of Carimona Township inquired if Mr. Janniís research had included any study on the impact on humans of gases emitted from feedlots. Mr. Janni replied that it had not. Mr. Janni also informed the group that his departmentís research had not taken into account the cumulative effects of feedlot concentration. To a question from Dave Mensink, also of Carimona Township, regarding potential cost-share for biofilters, Mr. Frauenkron replied that the county had some cost-share dollars available to operators, up to $1000 each. The planning commission took no action upon the completion of Mr. Janniís presentation. No other business was conducted by the commission.