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if a source of groundwater gets contaminated with a DNAPL and another one gets contaminated with a LNAPL, which one will be harder to remediate and why?
Jack Flubber, who owns sons of Flubber Construction Co. and runs it as a proprietorships had gross profit last year of $ 80000. His personal and family expenses are $ 52000 and he has $ 7000 in exemptions and deductions.
Biota can uptake and bioconcentrate compounds through vapor phase absorption. For example, leaves exposed to elemental mercury vapors will absorb the mercury into the aqueous phase and the lipid phases of the leaves. Kow for mercury = 4.17.
Also calculate the deflection of the beam to check that it complies with the design limit of L/200. Only variable actions are required for deflection check.
Neglecting the effect of altitude of local gravitional acceleration, determine the vertical distance climbed. Assume an average air density of 1.18 kg/m^3.
calculate the ratio of the area to volume for unit cube,a unit sphare inscribed inside the cube,and as right cylinder inscribed inside the cube.
Compare the total reactor volume required for 90% removal of the same pollutant in a CSTR system that contains a single reactor against a system that contains three CSTR reactors of equal volume in series.
Assume that 30% of the ash falls out as bottom ash in the furnace. Calculate the efficiency of an ESP (electrostatic precipitator) required to meet federal new source performance standards
What are the major policy aspects of the Clean Water Act? What is the history and statutory basis for federal regulation of wetlands? What are the national permits? What are the origin and significance of the no net loss policy?
If the allowable shear stress is 15ksi, determine the diameter of a solid shaft if it is to transmit 50hp at a frequency of (a) 900rpm, (b) 1800rpm
A rectangular gate 6 ft tall and 5 ft wide in the side of an open tank is held in place by the force F as indicated in the figure. The weight of the gate is negligible, and the hinge at O is frictionless.
A steel tank hold 120 ft^3 of water at atmospheric pressure(14.7psi and 68.4 degrees f). the water is subjected to a 100 fold increase in pressure. determine the initial weight and final density of the water if the volume decreases by .545 ft ^3.
convert the azimuths from north to bearings, and compute the angles, smaller than 180 degrees between successive azimuths 68o06'42", 133o15'56", 217o44'05", 320o35'18"
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