Appendix 4. Seven-Day Distilled Water Leachate Test

This test is intended only for dry, solid wastes, i.e., waste materials without any free liquids.

1. Place a 250 gm. (dry weight) representative sample of the waste material in a 1,500 ml. Erlenmayer flask.

2. Add one liter of deionized or distilled water into the flask and mechanically stir the material at a low speed for five minutes.

3. Stopper the flask and allow to stand for seven days.

4. At the end of seven days, filter the supernatant solution through a .45-micron filter, collecting the supernatant into a separate flask.

5. Subject the filtered leachate to the appropriate analysis.