The last continuing resolution passed and sighed has a 180 day moritorium keeping EPA from enforcing the rule. According to this letter from KAWG.

Enforcement of Spill Prevention, Control and Countermeasure Rules Delayed  

The recently-enacted continuing resolution contained language delaying enforcement of the Spill Prevention, Control and Countermeasure (SPCC) rules for agriculture for 180 days. As stated in the legislation, "No funds made available under this Act shall be used for a 180 day period beginning on the date of enactment of this Act to enforce with respect to any...the Spill, Prevention Control and Countermeasures rule, including amendments to that rule, promulgated by the Environmental Protection Agency under part 112 of Title 40 of the Code of Federal Regulations." Under the SPCC rule, farmers need spill prevention plans if an oil spill from their farms could reach a water of the United States and if they store oil (such as diesel, gasoline, hydraulic oil, lube oil, crop oil or vegetable oil) in aboveground quantities of more than 1,320 gallons or completely buried tanks of more than 42,000 gallons. More about ag-related SPCC requirements is at http://www.epa.gov/osweroe1/content/spcc/spcc_ag.htm