The main purpose of background sampling is to compare constituent concentrations between areas affected and unaffected by site activities
True or False?
(a) The main purpose of background sampling is to compare constituent concentrations between areas affected and unaffected by site activities; (b) Background sampling should always be a part of every site investigation; (c)Background substances can only arise from naturally occurring processes; (d) A commonly used method for comparing site and background constituent concentrations when the data are not normally distributed and/or contain outliers is the Wilcoxon rank sum two-sample test; (e) It is also possible to perform the site versus background comparison by comparing the upper tolerance limit computed from site data with individual background concentrations; (f) Both the quantile–quantile plot and the double quantile plot are useful graphical tools for visually comparing the site and background data distributions; (g) The quantile–quantile plot and the double quantile plot are duplicative, as they essentially serve the same function; (h) The mean or median contaminant concentration computed from a data sample is commonly used as the EPC for exposure risk assessment; (i) A COPC is a contaminant for which the EPC exceeds the AL or other regulatory screening value; (j) If the EPC is higher than the AL, but hypothesis tests indicate no significant difference between the site and background contaminant populations, the contamination may not be attributable to site-related activities.
- Assignment status: Already Solved By Our Experts
- (USA, AUS, UK & CA PhD. Writers)
- CLICK HERE TO GET A PROFESSIONAL WRITER TO WORK ON THIS PAPER AND OTHER SIMILAR PAPERS, GET A NON PLAGIARIZED PAPER FROM OUR EXPERTS