After that deadline the agency will use the public feedback and revise the proposed standards to meet those.
Last December, the disease-control agency dropped the planned list and revised the guidelines.
The agency revised its earlier count, which it had put at 10 deaths, but said they were still under investigation.
The agency has also revised two of the three indications for the use of estrogen.
The next time, the agency revised that count to fewer than three acres.
Then the agency will revise the exam and test its effectiveness.
The agency revised domestic rules 18 months ago.
In October 1999, the agency revised its projections, saying installation in 188 offices would cost $1.4 billion.
Last week the environmental agency revised its estimate, saying 15 percent of the crop had been sprayed with the chemical.
He said the agency constantly revises its cost estimates as its review process moves ahead.