IMMAG - Iowa Manure Management Action Group

Contact us

(515) 294-9590 or e-mail

May 2011 IMMAG Update

Welcome to the monthly update for the Iowa Manure Management Action Group (IMMAG) Web site. This update is provided as a service to inform you about changes made to the IMMAG Web Page or items of interest dealing with manure management and air quality from animal feeding operations. If you wish to subscribe to this mailing please click here. You may also view this update with direct links on the CURRENT NEWS site on IMMAG.



Follow iowamanure on Twitter The Current News page on the IMMAG site is updated weekly. Follow the Iowa Manure Management Action Group on Twitter at @iowamanure.

The Iowa Department of Natural Resources is moving to a better web system with a new look and improved content organization toward the end of June 2011. The website will provide upgraded online resources for users including a better search function, an agency-wide events calendar, RSS news feeds, enhanced mapping options and more.

Users can still find the site at However, interior page URLs will be changing so users will need to update their bookmarks. The Iowa DNR will provide redirects for about a year, pointing users to the new pages, if they use an address that is no longer valid. Within the new site, users will find information on the Animal Feeding Operations Program by hovering on the “environment” tab, then choosing land stewardship and then animal feeding operations.


Recently the Council for Agricultural Science and Technology (CAST) released a report titled Air Issues Associated with Animal Agriculture: A North American Perspective. According to the CAST Web page, this new Issue Paper goes beyond the generalizations and accusations often as­sociated with the air quality topic. Chaired by Dr. Larry Jacobson from the University of Minnesota, experts from six universities, including Hongwei Xin from Iowa State University, look at a wide scope of issues, from greenhouse gas emissions to the logistics of manure storage facilities.  This paper is currently linked on the Animal Agriculture and Air Quality web page at ISU or you can click on the title of the report above to access the report.

The National Air Quality Site Assessment Tool (NAQSAT) is Web-based tool designed to help producers and their consultants determine areas within their livestock operations where there are opportunities to make changes that result in reduced air emissions. NAQSAT is based on the most accurate, credible data currently available regarding mitigation strategies for air emissions of ammonia, methane, volatile organic compounds, hydrogen sulfide, particulates, and odor. The use of this tool is completely voluntary and the tool is available at no charge.

Link the NAQSAT tool
Link to a brochure about NAQSAT
Link to promotional video about NAQSAT

Iowa State University Extension as well as other state contacts are available to help you use and interpret this tool.  See the "resource" link once at the site and then click on state contacts.   I would like to thank the Iowa Turkey Federation, the Iowa Pork Producers Association, the Iowa Pork Industry Center and Iowa State University for their support in developing this tool.


The IMMAG Events page is a compilation of manure management related events. Please check the events page often for new listings.

June 22. Mono-Slope Beef Barn Open House and Air Emissions Tour, Royal, Iowa.  Iowa State University, in cooperation with the Agricultural and Biosystems Engineering Department at South Dakota State University and the USDA Meat Animal Research Center at Clay Center, Nebraska are hosting a Mono-Slope Beef Barn Open House from 10 a.m. to 3 p.m.  The objective of this open house is to highlight the on-going research on collecting base-line data for gases and dust emitted from mono-slope barns.  The event is free, but we ask that you please register so we can adequately prepare for lunch.  For more details about the open house and access to a registration form please click here.

June 24 at 1:30 p.m. central.  The next LPELC webinar is titled “Improving Implementation of Nutrient Management Plans”.  Click here for more information. 

Iowa State University Extension is hosting four workshops for livestock operations that might be considered medium-size Concentrated Animal Feeding Operations (CAFOs). Recent EPA activities in Iowa have prompted us to coordinate these workshops as informational meetings for livestock producers.  Medium CAFO status primarily applies to concentrated open lot animals of any species that meets a certain size requirement and discharge criteria. For example, size thresholds include 200-699 mature milk cows or 300-999 beef cattle or immature dairy heifers.

If you meet the size threshold, you are defined as a CAFO if: 1) you discharge pollutants to waters of the United States (typically lakes, streams or wetlands) by direct contact of the animals with the waters or 2) by discharge through a man-made ditch, flushing system, or similar man-made device (Note this discharge can also include any feedlot runoff, silage runoff or milkhouse wastewater, no matter how dilute or how far it travels).

For more information including a table that shows threshold size for number of animals and discharge criteria as well as a printable registration form, please see 

Registration is $30 for individuals and the first person from each livestock operation and $15 for each additional person from the same livestock operation.  Pre-registration is required, but payment can be made the door.  Workshops begin at 10 a.m. and will end by 3 p.m.

June 27. Room 115 at the NICC Dairy Center, Calmar.  Please contact the Winneshiek County Extension office at 563-382-2949 to register.

June 28. Country Junction Restaurant, Dyersville.  Please contact the Dubuque County Extension Office at 563-583-6496 to register.

June 29. Buzzy’s Restaurant, Welton.  Please contact the Clinton County Extension office at 563-659-5125 to register.

June 30 Moose Lodge in Charles City. Please contact the Floyd County Extension office at 641-228-1453 to register. 

If you or your company is interested in sponsoring this series of meetings, please contact Angie Rieck-Hinz, Extension Program Specialist at Iowa State University at 515-294-9590, or by June 1. Sponsorship is $250 and includes your company name in correspondence to livestock producers; a table for a display at each meeting, time on the program agenda to highlight your company and services offered, and your logo and contact information in program handouts.  Your meeting registration, meals and handout materials are included in your sponsorship.

ISU Extension, IMMAG and NRCS are offering an Introductory RUSLE2 and Iowa P Index workshop on July 26 at the Polk County Extension office.  Registration for this workshop is open. Click here for more information.

Finally, don’t forget the North America Manure Handling Expo in Norfolk, NE on July 20. This promises to be a large and dynamic event with multiple workshops, demonstrations, vendor booths and other activities.  I hope to see you there!

Link to Expo Web Site

Best Wishes,

Angela Rieck-Hinz
2104 Agronomy Hall
Iowa State University
Ames, IA 50011
(515) 294-9590
Iowa Manure Management Action Group

Manure sampling - Click on photo to enlarge

Manure sampling.


Newest IMMAG update available.