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You are the project manager of an environmental company that was hired to cleanup a historical arsenic contamination site. Soil sampling results indicated the area impacted with arsenic above action levels is 30 feet by 55 feet. The depth of the arsenic plume is three feet below ground surface. The land owner wanted to clean this site for future development. Answer the questions below to help you prepare a cost estimate for this portion of the project. Your solutions and any assumptions to justify your estimate must be shown.
a. What is the chemical symbol of arsenic, and what group/family does it belong to?
b. Solve for the minimum volume of soil that will be excavated in cubic yards?
c. If each dump truck can transport 18 cubic yards, determine how many dump trucks loads will be transported? For calculation purposes, add a 15% "fluff factor" (add to the volume that will be transported).
d. If the bulk density of soil is 1350 kg/m3 (84.3 lb/ft3), solve for the weight of the soil that will be transported to a disposal site in kilograms?
Describe how the supervisor should state minimum job requirements when he or she requests new employees to be hired into the department.
Caroline Roe writes about Isaac of Girona, a Jewish physician in 14th century Catalonia. What unusual physical attribute does Isaac have, which must make detecting more difficult?
What sort of group is defined by the organizations structur
A successful diversity plan leads to a workforce that demonstrates cultural competence in the long run. Cultural competence is the ability to interact effectively with people of different cultures.
Calculate the groundwater discharge (volumetric flow rate, Q) in cubic meters per day for an aquifer that is 350 square feet cross sectional area, hydraulic gradient of 0.001 and hydraulic conductivity, K, of 3x10-5 ft/d.
It is almost universally accepted that labor unions, but not companies, must be democratic. Why is there this dichotomy? What does this dichotomy imply about the organizational structures and sources of power for labor unions and for corporations?
Explain why there is a difference in VO2 max between
In your own words, explain one of the following everyday phenomena in regard to the bonding properties of water, and propose one other everyday phenomenon that demonstrates the bonding properties of water:Why do you feel cool when you sweat?
Analyze the causes of anorexia in hospitalized patients. Provide three patient scenarios that commonly result in decreased food intake during prolonged hospitalizations.
Write a summay of the article RACE, CLASS, AND GENDER IN THE UNITED STATES.
A bank finds that the average number of people waiting in line during lunch hour is 10. On average, during this period, 2 people per minute leave the bank after receiving service. on average, how long do bank customers wait in line?
Describe posttraumatic stress disorder (PTSD). Identify some of the biological, psychological, and social factors associated with the disorder. Briefly discuss how PTSD could treated using the psychological, biomedical and social approaches descri..
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