Regulations.gov document: EPA. OGWDW. From Michael Cummins. To Marc Parrotta. Memorandum Regarding Removal of Radon from Contaminated Ground Water by Packed Column Air Stripping. Apr. 26, 1988. 1 p. + 1 attach. (23 pp.) [PHASE-III-RADS-III-L4A-11] — retained record — High Signal
Regulations.gov document: EPA. OGWDW. From Michael Cummins. To Marc Parrotta. Memorandum Regarding Removal of Radon from Contaminated Ground Water by Packed Column Air Stripping. Apr. 26, 1988. 1 p. + 1 attach. (23 pp.) [PHASE-III-RADS-III-L4A-11]