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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)
Sketch typical complete grain-size distribution curves for (i) well graded soil and (ii) uniform silty sand. Form the curves, evaluate the uniformity coefficient and effective size
how can I come up with the research on the water bound macadam road construction
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Question Give reason that why are most marine piles circular in cross section? Answer As marine piles, there are a number of options existing for selection, name as H-
definition of youngs modulus
Q. Replacement of loose rivets? i) Slight slackness of rivet does not cause loss of rivet strength. ii) Renewal of slack rivets should be done only when the slack rivets are
A sand at a borrow pit is determined to have an in-situ dry unit weight of 18.4 kN/m 3 . Laboratory tests indicate the maximum and minimum unit weight values of 19.6 kN/m 3 and
Define the term - Clamp splice In a Clamp splice, bolts and nuts alongwith clamp plates are used. Tendons are held in-between the clamp plates and these clamp plates are tighte
friction circle method of stability of slope
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