1.a - Calculate the flow rate in the shallow sandstone groundwater aquifer (use highest hydraulic conductivity of sandstone in Table 9.1) with porosity 0.35 and hydraulic head measured at three locations below. Location A is 22 m, Location B is 33 m, and Location C is 25.6 m 1.b - An instantaneous, illegal dump of 1 kg of perfluorooctanoic acid (PFOA) occurs in the aquifer from Problem 1 1000 m up-gradient from a drinking water well. What is the maximum concentration of PFOA that could be expected in the drinking water well (assume no retardation or reaction)? 1.c - Calculate the maximum concentration and the time at which the maximum concentration is expected with retardation and no reaction (PFOA is a “forever chemical” with a half-life >90 years in groundwater). KOC = 130 L/kg, foc = 0.5%, porosity = 0.35, bulk density of soil = 2.5 kg/L.
discuss the view that the impact of the earths internal process are a liability than assets to humans (not more than 2.5 pages)
Discuss the view that the impact of Earth internal processes are liability than assets to human
how do prevailing winds affect the movement of air masses
impact of earth’s internal processes are a liability than assets to humans. (20 marks; not more than 2 pages)
Discuss the view that the impact of earth’s internal processes are a liability than assets to humans.
The roles weather plays in agricultural and transportation sector
With the aid of a diagram, describe the vertical structure of the atmosphere based on temperature change.
the base and height of a right angle triangle are 4 km and 7 cm respech vely the scale is 1 cm to 3 km what is the ground area of the triangle ?