40 CFR §13.21

1. (a)Purpose. This section establishes EPA's policies and procedures for recovery of debts owed to the United States by installment collection from the current pay account of an employee.
2. (b)Scope. The provisions of this section apply to collection by salary offset under 5 U.S.C. 5514 of debts owed EPA and debts owed to other Federal agencies by EPA employees. This section does not apply to debts owed EPA arising from travel advances under 5 U.S.C. 5705, employee training expenses under 5 U.S.C. 4108 and to other debts where collection by salary offset is explicitly provided for or prohibited by another statute.
3. (c)References. The following statutes and regulations apply to EPA's recovery of debts due the United States by salary offset:
   1. (1)5 U.S.C. 5514, as amended, governing the installment collection of debts;
   2. (2)31 U.S.C. 3716, governing the liquidation of debts by administrative offset;
   3. (3)5 CFR part 550, subpart K, setting forth the minimum requirements for executive agency regulations on salary offset; and
   4. (4)4 CFR parts 101-105, the Federal Claims Collection Standards.