California/Arizona DairyBusiness: November 2010

Air, water deadlines loom

By Deanne Meyer

Livestock Waste Management Specialist

University of California, Davis

Fall is in the air and before we know it, winter will be here. This December there are potentially two sets of deliverables for dairymen in California’s Central Valley.

These deliverables apply to all dairies residing in the Central Valley Regional Water Quality Control District jurisdiction (Sacramento and San Joaquin Valleys) and to many dairies in the San Joaquin Valley Air Pollution Control District (San Joaquin to Kern Counties).


At the April 24, 2009 Regional Water Board meeting, the board members delayed the need for producers to complete the Waste Management Plan by one year to July, 2010. Table 1 of the General Order was revised to change the due date for the status report on facility retrofitting completion as proposed by the Waste Management Plan (WMP) from July, 2010 to Dec. 31, 2010. The status report shall provide the status of facility retrofitting needed to implement the WMP. There are potentially three different areas in the WMP which may require retrofitting. This status report on facility retrofitting completion is due Dec. 31, 2010.

Items to include in the report:

• Modifications or improvements if the existing facility’s storage capacity is inadequate.

• Modifications or improvements if the existing facility’s flood protection does not meet the minimum requirements (protection from inundation of manured areas during flooding).

• Modifications or improvements if the existing facility’s design and construction criteria of the production area are insufficient.

If no modifications are required your report should indicate no modifications are required.

Any proposed modifications or improvements must be prepared by, or under the responsible charge of, and certified by a civil engineer who is registered according to California law, or other person as may be permitted under the provisions of the California Business and Professions Code, to assume responsible charge of such work. If modifications and improvements are being done, carefully read through the requirements in the General Order (pages B-4 through B-6).

The California Dairy Quality Assurance Program (CDQAP) is working closely with the regional board to have a template available for producers to use that will meet the regulatory requirements associated with this deliverable. It is anticipated that this document will be available at (Section 6 Document 23). For some producers, no modifications will be necessary. Yet, it is wise to submit documentation to the regional board indicating no modifications are needed.

It is very important for producers to carefully evaluate their storage capacity calculations. Were these made with a standard 90- or 120-days of winter storage? If so, you need to ask the question – does that agree with the information I have in my nutrient budget? If I need to store water until fields require nutrients, there is potentially a longer storage period required. Understand what you need for storage. Work with your agronomist to be sure that what was calculated in the Waste Management Plan will work in the crop side as well.


Dec. 10, 2010 is the due date for permit applications for dairies with as few as 175 cows with the San Joaquin Air Pollution Control District (SJAPCD).  The SJAPCD sent out meeting announcements at the end of August identifying the changes resulting in smaller farms requiring permits.

The SJAPCD’s new source review rule (Rule 2201) was changed, resulting in a significant drop to the major source threshold. Now facilities with 5 tons/yr of NOx and VOC emissions have reached the permit threshold. There are various sources of equipment that contribute toward the 5 tons/yr of emissions including: stationary and portable irrigation pump engines, emergency engines, boilers, gasoline tanks, confined animals, etc. Mobile source emissions, such as tractors, harvesters, trucks, etc., are not counted toward the 5 tons/yr.

For more information see the flyer at the district website: 2010/09-21-10_AgWorkshops/Permitting%20Workshop%208-20-10.pdf


To contact Deanne Meyer, University of California, Davis, call 530-752-9391 or e-mail her at