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Define Surface Water Treatment Rule (SWTR)
SWTR sets forth primary drinking water regulations requiring treatment of surface water supplies or groundwater supplies under the direct influence of surface water.
a. Require filtration, and/or disinfection (to satisfy the MCLs for turbidity and microorganisms)
b. Turbidity limit (should be less than 0.5 NTU in 95% samples for direct filtration (may vary from state to state and when different filtration is used)
c. Disinfection (99.9 or 3-log removal for giardia or 99.99% or 4-log removal for viruses for filtered or unfiltered water systems)
Emulsion: An emulsion is a bituminous binder which is in a fluid form at atmospheric temperatures above O o C and requires no heating at all. Bitumen cab be converted to an e
applications of vectors
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The design of flexible pavements how it is used
Flash Point Test: The flash point is the temperature at which the bitumen gives off vapours which ignite in the presence of a flame. The flash point temperature gives the cri
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