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Antidegradation
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May 2010
Friday 28
Withdrawal of Federal Antidegradation Policy for all Waters of the United States Within the Commonwealth of Pennsylvania
November 2008
Friday 14
Withdrawal of Direct Final Rule Removing the Federal Antidegradation Policy Applicable to Waters of the United States Within the Commonwealth of Pennsylvania
Removing the Federal Antidegradation Policy Applicable to Waters of the United States Within the Commonwealth of Pennsylvania
September 2008
Monday 15
Withdrawal of Federal Antidegradation Policy for All Waters of the United States Within the Commonwealth of Pennsylvania
Withdrawal of Federal Antidegradation Policy for All Waters of the United States Within the Commonwealth of Pennsylvania
December 2007
Wednesday 12
Water Quality Standards for Puerto Rico
May 2007
Thursday 17
Water Quality Standards for Puerto Rico
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Water quality standards
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Environmental protection
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