“…Work on this subject has previously addressed RGVs applied to BTEX (benzene, toluene, ethylbenzene, and xylenes) (Jennings, 2009), naphthalene (Jennings, 2012a), chlorinated methanes, ethanes, and ethenes (Jennings, 2011a,b,c), chlorinated benzenes (Kowalsky and Jennings, 2012), polycyclic aromatic hydrocarbons (Jennings, 2012b,c) and the 20 most frequently regulated elements (Jennings, 2010(Jennings, , 2013a. Several other research groups have also examined RGV variability (see Jennings and Li, 2014), but have not considered the scope of jurisdictions or the set of pesticides considered here.…”