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Chapter 4-Site-Spec Austiia/ Storm Water BMPs • <br />both to absorb the pollutants from the storm water and restrict the movement of a spill. Socks are _ <br />often used together with curbing to clean up small spills. I* <br />What to Consider <br />Because sorbents work by a chemical or physical reaction, some sorbents are better than others for <br />certain types of spills. Therefore, the use of sorbents requires that personnel know the properties <br />of the spilled material(s) to know which sorbent is appropriate. To be effective, sorbents must <br />adsorb the material spilled but must not react with the spilled material to form hazardous or toxic <br />substances. Follow the manufacturers' recommendations. <br />For sorbents to be effective, they must be applied immediately in the release area. The use of <br />sorbent material is generally very simple: the sorbent is added to the area of release, mixed well, <br />and allowed to adsorb or absorb. Many sorbents are not reusable once they have been used. <br />Proper disposal is required. <br />Advantages of Sorbents <br />• Work in water environments (booms and socks) <br />• Offer recycling opportunities (some types of sorbents) <br />Disadvantages of Sorbents <br />• Require a knowledge of the chemical makeup of a spill (to choose the best sorbent) <br />• Offer no recycling opportunities (some types of sorbents) • <br />• May be expensive practice for large spills <br />• May create disposal problems and increase disposal costs by creating a solid waste and <br />potentially a hazardous waste. <br />• <br />4-34