1.Chlorpyrifos insecticide exposure in the general population isoften measured directly. The methodology for measuring exposurespecifically to chlorpyrifos involves…

a.Collecting blood and measuring the parent compound

b.Collecting saliva and measuring the parent compound

c.Collecting blood and measuring trichloropyridinol

d.Collecting urine and measuring dialkyl phosphate residues

e.Collecting urine and measuring trichlorpyridinol

2.Consumers spraying their lawns for control of white grubs withthe formulation Dursban prior to its removal from hardware storeslike Home Depot and Ace were estimated to have a high end exposureof about 0.015 mg/kg/day. Considering that this product would onlybe applied once or twice a growing season, the margin of exposure(MOE) relative to the acute no observable adverse effect level(NOEL or NOAEL) of 0.5 mg/kg/day is __________. This exposure is_________ (above or love) EPAs levels of concern (LOC).

3.. When EPA assesses risk to endangered species, the agencyuses an effective safety factor of [___________].

4.In the pesticide registration eligibility decision makingprocess, what two types of data does EPA routinely use to estimaterisk to aquatic invertebrates?

a.48 hour LC50 of Culex spp.

b.48 hour LC50 of Daphnia spp.

c.96 hour LC50 of Onchorynchus spp.

d. 96 hour LC50 of Bombus spp.

e.Results from PRZM and EXAMS

f.Results from the USGS NAWQA Database

g.Results from chemical company residue monitoring studies