SITE INFORMATION AND CORRESPONDENCE

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"Faison A" as extremely dangerous poisonous gases or liquids of such a nature that a very small amount of gas, or vapor of the liquid , x mixed with air is dangerous to life. t Many Poison A materials are gases or compressed gases and would not ' be_ found in drum-type containers. Liquid Poison A 's would probably be found only in closed containers. All samples ta3cen from closed s drums do not have to be shipped as Poison A 's. Based upon informa- tion available, a judgment must be made whether a sample from a closed container is a Poison A. l : If Poison A is eliminated as a shipment category, the next two class- ifications lass- ifications are "flammable" or "nonflammable" gases. Since few gas samples are collected, "flammable liquid" would be the next appli- cable category. With the elimination of radioactive material , Poison A, flammable gas, and nonflammable gas, the sample can be classified as flammable liquid (or solid) and shipped accordingly. These pro- cedures would also suffice for shipping any other samples classi- fied below flammable liquids in the DOT classification table. liquids in the DOT classification table. For samples containing unknown material , other categories listed be- low flammable liquids/solids on the table are generally not considered ' because eliminating other substances as flammable liquids requires flashpoint testing , which may be impractical and possibly dangerous at a site. Thus, unless the sample is known to consist of material listed below -flammable liquid on the table, it is considered o f tam-. mable liquid (or solid) and shipped as such. i - "' 11 .3 SAMPLES CLASSIFIED AS FLAMMABLE LIQUID (OR SOLID) t 11 .3. 1 Sample Classification Applying the word "flammable" to a sample does not imply that it is in fact flammable, or grow flammable. The word prescribes the class of packaging according to DOT regulations. ' 1 . Collect sample in a glass container with nonmetallic , tef-- Ion lined screw cap. To prevent leakage, fill container no more than 90 percent full at 134 F. If an air space i in the sample container would affect sample integrity (i .e. , no headspace is maintained for volatiles) , place that container within a second container to meet 90 per- cent requirement. 2. Complete sample identification tag and attach securely to sample container. k. 3. Seal container and place in 2-mil thick (or thicker) poly- ethylene bag , one sample per bag. Position identifica— tion tag so it can be read through bag. Seal bag. 3 - 4. Place sealed bag inside metal can and cushion it with enough noncombustible, absorbent material (for example, vermiculite or diatomaceous earth) between the bottom and sides of the can and bag to prevent breakage and absorb leakage. Pack �1 22 -