Washing with a good detergent and water is the most effective method of cleaning up contamination. After decontamination, repeat the monitoring procedures and reclean if necessary. If your protective procedures are adequate, it should be a rare event to find contamination anywhere other than on your absorbent paper. Remember that your G-M counter is a relatively insensitive instrument so that not finding radiation is not a guarantee that contamination is absent and that your most effective monitoring device is the use of wipes which are then counted by an appropriate procedure. If the Radiation Safety Officer finds significant contamination during his routine monitoring, you may be asked by the Radiological Control Committee to submit to it a written report of your routine monitoring procedures.
All liquid is to be collected in bottles or carboys.
Liquid Scintillation fluid is to be left in individual vials and will be collected in boxes lined with plastic bags. When 14C or 3H are the radioisotopes involved, the total activity shall not exceed 1.0 mci per container. Individual laboratories may not hold radionuclides for decay and disposal. This will be done by the Office of Radiological Control. An RLS may not take credit for radioactive decay on his inventory.